1st grade go math reteach

PROVIDES Tier 1 Intervention for Every Lesson

Reteach BookGrade 1

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Grade 1iiiReteach

Contents

CRITICAL AREA 1: Operations and Algebraic ThinkingChapter 1: Addition Concepts

1.1 Algebra • Use Pictures to Add To ..................................................................R1

1.2 Model Adding To .........................................................................................R2

1.3 Model Putting Together ................................................................................R3

1.4 Problem Solving • Model Addition ...............................................................R4

1.5 Algebra • Add Zero ....................................................................................R5

1.6 Algebra • Add in Any Order .........................................................................R6

1.7 Algebra • Put Together Numbers to 10 ..........................................................R7

1.8 Addition to 10 .............................................................................................R8

Chapter 2: Subtraction Concepts

2.1 Use Pictures to Show Taking From .................................................................R9

2.2 Model Taking From ....................................................................................R10

2.3 Model Taking Apart ...................................................................................R11

2.4 Problem Solving • Model Subtraction .........................................................R12

2.5 Use Pictures and Subtraction to Compare .....................................................R13

2.6 Subtract to Compare .................................................................................R14

2.7 Subtract All or Zero ...................................................................................R15

2.8 Algebra • Take Apart Numbers ...................................................................R16

2.9 Subtraction from 10 or Less ........................................................................R17

Chapter 3: Addition Strategies

3.1 Algebra • Add in Any Order .......................................................................R18

3.2 Count On .................................................................................................R19

3.3 Add Doubles ............................................................................................R20

3.4 Use Doubles to Add ...................................................................................R21

3.5 Doubles Plus 1 and Doubles Minus 1 ............................................................R22

3.6 Practice the Strategies ...............................................................................R23

3.7 Add 10 and More ......................................................................................R24

3.8 Make a 10 to Add ......................................................................................R25

3.9 Use Make a 10 to Add ...............................................................................R26

3.10 Algebra • Add 3 Numbers ..........................................................................R27

3.11 Algebra • Add 3 Numbers ..........................................................................R28

3.12 Problem Solving • Use Addition Strategies ..................................................R29


Grade 1ivReteach

Chapter 4: Subtraction Strategies

4.1 Count Back ..............................................................................................R30

4.2 Think Addition to Subtract ...........................................................................R31

4.3 Use Think Addition to Subtract.....................................................................R32

4.4 Use 10 to Subtract ....................................................................................R33

4.5 Break Apart to Subtract ..............................................................................R34

4.6 Problem Solving • Use Subtraction Strategies ..............................................R35

Chapter 5: Addition and Subtraction Relationships

5.1 Problem Solving • Add or Subtract ............................................................R36

5.2 Record Related Facts ................................................................................R37

5.3 Identify Related Facts ................................................................................R38

5.4 Use Addition to Check Subtraction ...............................................................R39

5.5 Algebra • Unknown Numbers .....................................................................R40

5.6 Algebra • Use Related Facts ......................................................................R41

5.7 Choose an Operation .................................................................................R42

5.8 Algebra • Ways to Make Numbers to 20 ......................................................R43

5.9 Algebra • Equal and Not Equal ...................................................................R44

5.10 Facts Practice to 20 ..................................................................................R45


Grade 1vReteach

CRITICAL AREA 2: Number and Operations in Base TenChapter 6: Count and Model Numbers

6.1 Count by Ones to 120 ...............................................................................R46

6.2 Count by Tens to 120 ................................................................................R47

6.3 Understand Ten and Ones ..........................................................................R48

6.4 Make Ten and Ones ...................................................................................R49

6.5 Tens .......................................................................................................R50

6.6 Tens and Ones to 50 .................................................................................R51

6.7 Tens and Ones to 100 ...............................................................................R52

6.8 Problem Solving • Show Numbers in Different Ways .....................................R53

6.9 Model, Read, and Write Numbers from 100 to 110 .........................................R54

6.10 Model, Read, and Write Numbers from 110 to 120 .........................................R55

Chapter 7: Compare Numbers

7.1 Algebra • Greater Than .............................................................................R56

7.2 Algebra • Less Than .................................................................................R57

7.3 Algebra • Use Symbols to Compare ............................................................R58

7.4 Problem Solving • Compare Numbers ........................................................R59

7.5 10 More, 10 Less ......................................................................................R60

Chapter 8: Two-Digit Addition and Subtraction

8.1 Add and Subtract Within 20 ........................................................................R61

8.2 Add Tens .................................................................................................R62

8.3 Subtract Tens ...........................................................................................R63

8.4 Use a Hundred Chart to Add .......................................................................R64

8.5 Use Models to Add ....................................................................................R65

8.6 Make Ten to Add .......................................................................................R66

8.7 Use Place Value to Add ..............................................................................R67

8.8 Problem Solving • Addition Word Problems .................................................R68

8.9 Related Addition and Subtraction .................................................................R69

8.10 Practice Addition and Subtraction ................................................................R70


Grade 1viReteach

CRITICAL AREA 3: Measurement and DataChapter 9: Measurement

9.1 Order Length ............................................................................................R71

9.2 Indirect Measurement ................................................................................R72

9.3 Use Nonstandard Units to Measure Length ....................................................R73

9.4 Make a Nonstandard Measuring Tool ............................................................R74

9.5 Problem Solving • Measure and Compare ...................................................R75

9.6 Time to the Hour .......................................................................................R76

9.7 Time to the Half Hour .................................................................................R77

9.8 Tell Time to the Hour and Half Hour ..............................................................R78

9.9 Practice Time to the Hour and Half Hour .......................................................R79

Chapter 10: Represent Data

10.1 Read Picture Graphs .................................................................................R80

10.2 Make Picture Graphs .................................................................................R81

10.3 Read Bar Graphs ......................................................................................R82

10.4 Make Bar Graphs ......................................................................................R83

10.5 Read Tally Charts ......................................................................................R84

10.6 Make Tally Charts......................................................................................R85

10.7 Problem Solving • Represent Data .............................................................R86

© Houghton Mifflin Harcourt Publishing Companyvii Grade 1Reteach

CRITICAL AREA 4: GeometryChapter 11: Three-Dimensional Geometry

11.1 Three-Dimensional Shapes .........................................................................R87

11.2 Combine Three-Dimensional Shapes ............................................................R88

11.3 Make New Three-Dimensional Shapes ..........................................................R89

11.4 Problem Solving • Take Apart Three-Dimensional Shapes ..............................R90

11.5 Two-Dimensional Shapes on Three-Dimensional Shapes ..................................R91

Chapter 12: Two-Dimensional Geometry

12.1 Sort Two-Dimensional Shapes .....................................................................R92

12.2 Describe Two-Dimensional Shapes ...............................................................R93

12.3 Combine Two-Dimensional Shapes ..............................................................R94

12.4 Combine More Shapes ...............................................................................R95

12.5 Problem Solving • Make New Two-Dimensional Shapes.................................R96

12.6 Find Shapes in Shapes ...............................................................................R97

12.7 Take Apart Two-Dimensional Shapes ............................................................R98

12.8 Equal or Unequal Parts ...............................................................................R99

12.9 Halves ...................................................................................................R100

12.10 Fourths ................................................................................................. R101

viii Grade 1Reteach© Houghton Mifflin Harcourt Publishing Company

End-of-Year ResourcesGetting Ready for Grade 2

Lesson 1 Algebra • Ways to Expand Numbers. . . . . .GRR1 Lesson 2 Identify Place Value . . . . . . . . . . . . . .GRR2 Lesson 3 Use Place Value to Compare Numbers . . . .GRR3 Lesson 4 Algebra • Addition Function Tables. . . . . . .GRR4 Lesson 5 Algebra • Subtraction Function Tables . . . . .GRR5 Lesson 6 Algebra • Follow the Rule . . . . . . . . . . .GRR6 Lesson 7 Add 3 Numbers . . . . . . . . . . . . . . . . .GRR7 Lesson 8 Add a One-Digit Number to a

Two-Digit Number . . . . . . . . . . . . . . . .GRR8 Lesson 9 Add Two-Digit Numbers . . . . . . . . . . . . .GRR9 Lesson 10 Repeated Addition . . . . . . . . . . . . . . GRR10 Lesson 11 Use Repeated Addition to

Solve Problems . . . . . . . . . . . . . . . . GRR11 Lesson 12 Choose a Non-Standard

Unit to Measure Length . . . . . . . . . . . . GRR12 Lesson 13 Use a Non-Standard Ruler . . . . . . . . . . GRR13 Lesson 14 Compare Lengths . . . . . . . . . . . . . . . GRR14 Lesson 15 Time to the Hour and Half Hour . . . . . . . GRR15 Lesson 16 Use a Picture Graph. . . . . . . . . . . . . . GRR16 Lesson 17 Use a Bar Graph . . . . . . . . . . . . . . . GRR17 Lesson 18 Take a Survey . . . . . . . . . . . . . . . . . GRR18 Lesson 19 Identify Shapes . . . . . . . . . . . . . . . . GRR19 Lesson 20 Equal Shares . . . . . . . . . . . . . . . . . GRR20

Reteach Grade 1© Houghton Mifflin Harcourt Publishing Company

R1

Lesson 1.1ReteachName

Algebra • Use Pictures to Add To

3 cows and 2 more cows 5 — cows.

Draw circles around the animals added to the group. Write how many.

1.

3 cats and 4 more cats — cats 2.

2 bees and 2 more bees — bees3.

5 dogs and 1 more dog — dogs


R2


Model Adding To

1 frog and 2 more frogs

1 + 2 = 3 —

Use to show adding to. Draw the . Write the sum. 1. 3 horses and 4 more horses

3 + 4 = — 2. 1 bee and 1 more bee

1 + 1 = — 3. 4 cows and 1 more cow

4 + 1 = —


R3


Model Putting Together

Use to add two groups.Put the groups together to find how many.

There are 3 brown dogs.

There is 1 white dog.

How many dogs are there?

4 — dogs

Use to solve. Draw to show your work.Write how many.

1. There are 4 black bears and 3 brown bears. How many bears are there?

—

bears 4 + 3 = —

2. There are 6 red flowers and2 white flowers. How many flowers are there?

— flowers 6 + 2 = —

3 + 1 = 4

5 3

13

4


R4


Problem Solving • Model AdditionRico has 3 . Then he gets 1 more .How many does he have now?

Unlock the Problem

What do I need to find?

the number of Rico has now.

What information do I need to use?

Rico has 3 — .

He gets 1 — .

Show how to solve the problem.

3 + 1 =

Read the problem. Use the bar model to solve. Complete the model and the number sentence.1. There are 5 birds flying.

Then 3 more birds join them. How many birds are flying now?

5 + 3 =

crayons


R5


Algebra • Add Zero

Use to show each number. Add. Write the sum.

3 + 0 = 3 — 0 + 2 = 2 —

When you add zero to a number, the sum is that number.

Use to show each number. Draw the . Write the sum.1.

0 + 4 = —

2.

6 + 0 = —

3.

0 + 1 = —

4.

0 + 5 = —


R6


Algebra • Add in Any Order

Write an addition sentence. Change the order of the addends. The sum is still the same.

5 + 3 = 8 — 3 — + 5 — = 8 —

sum sum

1.

1 + 5 = —

— + — = —

2.

3 + 1 = — — + — = —

Use to add. Write the sum.

Change the order of the addends. Color to match. Write the addition sentence.

Turn the cube train around.


Name

Grade 1R7Reteach

Lesson 1.7Reteach

Algebra • Put TogetherNumbers to 10

You can use to model ways to make 7.

Use . Draw to show how to make 7. Complete the addition sentences.

1.

2.

3.

4.

3 + — = 7

4 + — = 7

2 + — = 7

1 + — = 7

6 + 1 — = 7

5 + 2 — = 7


R8


Addition to 10

You can use to help you add.

Use . Write the sum.

1. 2.

3. 4.

4+ 2

6

6+ 3

4+ 1

2+ 3

1+ 2

3+ 5

Reteach Grade 1R9

Name


Lesson 2.1Reteach

Use Pictures to Show Taking From

Use the picture.

5 rabbits 3 hop away. 2 — rabbits now

Write how many there are now.

1.

8 birds 4 fly away. — birds now

2.

7 bees 2 fly away. — bees now

Reteach Grade 1R10

Name


Lesson 2.2Reteach

Model Taking From

Circle the part you take from the group. Then cross it out.

3 dogs 2 dogs run away. 1 — dog now

3 - 2 = 1 —

Circle the part you take from the group. Then cross it out. Write the difference.

1. 4 goats 2 goats walk away. — goats now

4 - 2 = —

2. 6 ants 3 ants walk away. — ants now

6 - 3 = —

Reteach Grade 1R11

Name


Lesson 2.3Reteach

big blocks

2

yellow books

Model Taking Apart

You can use to subtract.Sam has 6 cars. 4 cars are red. The rest are yellow. How many cars are yellow?

cars are yellow.

Use to solve. Color. Write the number sentence and how many.

1. There are 5 books. 1 book is red. The rest are yellow. How many books are yellow?

2. There are 6 blocks. 3 blocks are small. The rest are big. How many blocks are big?

6 2 4 5 2

9

7 2

1

5

Reteach Grade 1R12

Name


Lesson 2.4Reteach

Problem Solving • Model SubtractionThere were 9 bugs on a rock. 7 bugs ran away. How many bugs are on the rock now?


how many

on the rock now


bugs on a rock

bugs ran away


Read the problem. Use the model to solve. Complete the model and the number sentence.

1. There are 5 birds. 1 bird is big. The rest are small. How many birds are small?

5 - 1 =

9 - 7 =

bugs 97

2

Reteach Grade 1R13

Name


Lesson 2.5Reteach

Use Pictures and Subtraction to Compare

You can subtract to compare groups.

7 - 6 = 1 —

There is 1 more There is 1 fewer than there are . than there are .

Subtract to compare.

1.

5 - 3 = —

— more

2.

6 - 4 = —

— fewer

3.

4 - 1 = —

— more

4.

7 - 3 = —

— fewer

8

6

8

6

2

6

4

64

Reteach Grade 1R14

Name


Lesson 2.6Reteach

Subtract to Compare

You can use to show the bar model.

Andy has 8 balloons. Jill has 6 balloons. How many more balloons does Andy have than Jill?

Read the problem. Use the bar model to solve. Write the number sentence. Then write how many.

1. Bo has 6 rocks.Jen has 4 rocks. How many more rocks does Bo have than Jen?

more balloons

— more rocks

8 - 6 = 2

- =

Reteach Grade 1R15

Name


Lesson 2.7Reteach

Subtract All or Zero

When you subtract zero from a number, the difference is the number.

No are crossed out.

4 - 0 = 4 —

When you subtract a number from itself, the difference is zero.

All are crossed out.

4 - 4 = 0 —

Use . Write the difference.

1.

3 - 3 = 0 —

2.

5 - 0 = —

3.

2 - 0 = —

4.

1 - 1 = —

5.

6 - 0 = —

6.

4 - 4 = —

Reteach Grade 1R16

Name


Lesson 2.8 Reteach

Algebra • Take Apart Numbers

You can use to take apart 6.

Circle the part you take away. Then cross it out.

Use to take apart 6. Circle the part you take away. Then cross it out. Complete the subtraction sentence.

1. 6 - 3 = —

2. 6 - 2 = —

3. 6 - 1 = —

4. 6 - 0 = —

6 - 5 = 1 —

6 - 4 = 2 —

Reteach Grade 1R17

Name


Subtraction from 10 or Less

You can use to help you subtract.

Write the subtraction problem.

1. 2.

3. 4.

8 -1

_

B

4 -2

_

B

5 -3

_

B

7 -4

_

B

6 - 3

_

B

3

3 - 1

_

B

2

Lesson 2.9Reteach


Name

Grade 1R18Reteach

Lesson 3.1Reteach

Algebra • Add in Any Order

You can change the order of the addends. The sum is the same.

5 + 2

_

7

2 + 5

_

7

Add. Change the order of the addends. Add again.1.

3 + 1

_

2.

4 + 2

_

3. 8 + 3

_

4.

9 + 5

_

B

+ B

_

B

B

+ B

_

B

B

+ B

_

B

B BBB

B

+ B

_

B

B

BB

B

4

9

8

6


Name

Reteach R19 Grade 1

Lesson 3.2Reteach

Count On

You can count on to find 4 + 3.Start with the greater addend. Then count on. Write the sum.

4 5 — 6 — 7 —

4 + 3 = 7 —

Circle the greater addend. Count on 1, 2, or 3. Write the missing numbers.

1. 1 + 6

—

1 + 6 = —

2. 9 + 1

—

9 + 1 = —

3. 4 + 2

— —

4 + 2 = —

4. 3 + 8

— —

—

3 + 8 = —

To add 3, count on 3.


Name

Grade 1R20Reteach

Lesson 3.3Reteach

Add Doubles

The addends are the same in a doubles fact.

3 — + 3 — = 6Count the . Write the missing numbers.

1.

— + — = 8

2.

— + — = 10

3.

— + — = 4

4.

— + — = 2

DO NOT EDIT--Changes must be made through “File info” CorrectionKey=CA=B

THINK 3 + 3 = 6.

1 more than 6 is 7.


Name

Grade 1R21Reteach

Lesson 3.4Reteach

Use Doubles to Add

Use a doubles fact to solve 4 + 3.Break apart 4 into 1 + 3.

1 + 3 + 3

1 + 6 = 7

So, 4 + 3 = 7 — .

Use to model. Break apart to make a doubles fact. Add.

1. 6 + 5

1 — + — + —

— + — = —

So, 6 + 5 = — .

2. 8 + 7

— + — + —

— + — = —

So, 8 + 7 = — .


Name

Grade 1R22Reteach

Lesson 3.5Reteach

Doubles Plus 1 and Doubles Minus 1

You can use doubles plus one facts and doubles minus one to add.

Use doubles fact 3 + 3 = 6.

3 + 4 = 7 — 3 + 2 = 5 —

Use doubles plus one or doubles minus one to add.

1.

5 + 6 = — 5 + 4 = —

2.

2 + 3 = — 2 + 1 = —

doubles plus one doubles minus one

6


Name

Grade 1R23Reteach

Lesson 3.6Reteach

Practice the Strategies

You can use different addition strategies to find sums.

Count On

6 + 2 = 8 —

Doubles

3 + 3 = 6 —

Doubles Plus 1

5 + 6 = 11 —

Doubles Minus 1

5 + 4 = 9 —

1. Count on 1.

7 + 1 = —

2. Count on 2.

7 + 2 = —

3. Count on 3.

7 + 3 = —

4. Use doubles.

6 + 6 = —

5. Use doubles plus 1.

6 + 7 = —

6. Use doubles minus 1.

6 + 5 = —

7 — 8 —


Name

Grade 1R24Reteach

Lesson 3.7Reteach

10 + 3

_

10 + 4

_

10

10

10

4

3

7 10 + 7

_

14

Add 10 and MoreYou can use counters and a ten frame to add a number to 10.

Find 10 + 4.

Draw . Show the number that is added to 10. Write the sum.

1.

2.


Name

Grade 1R25Reteach

Lesson 3.8Reteach

Make a 10 to AddShow 8 + 5 with counters and a ten frame.

Use . Make a ten. Add.

So, 8 + 5 = 13 — .

Draw to show the second addend. Make a ten. Add.

1. 8 + 6

So, 8 + 6 = — .2. 9 + 7

So, 9 + 7 = — .

8

8

6

5

9

7

10 + 3

_

13

10 + 4

_

10 + 6

_


Name

Grade 1R26Reteach

Lesson 3.9Reteach

Use Make a 10 to AddWhat is 9 + 5? Make a 10 to add.

Use and a ten frame. Show the addends.

Make a 10. Add.

So, 9 + 5 = 14 — .

Draw . Make a ten to add.

1. 8 + 5

So, 8 + 5 = — . 2. 7 + 4

So, 7 + 4 = — .

Show the greater addend in

the ten frame.

8

7

10

10

109

5

4

3

1

45

10 + 1

_

10 + 3

_


Name

Grade 1R27Reteach

Lesson 3.10Reteach

2 + + 8

8

=

+ =

1

11

11

—

7 + + 3

3

=

+ =

2

12

12

—

1 ++2

2

=

+ =

8

11

11

—

2 ++7

7

=

+ =

3

12

12

—

3 + + 1

1

=

+ =

4

8

8

7

4 ++3

3

=

+ =

1

8

8

5

Algebra • Add 3 Numbers

You can add numbers in any order.

3 + 4 + 1 = 8

Use circles to change which two addends you add first. Complete the addition sentences.

1.

2.


Name

Grade 1R28Reteach

Lesson 3.11Reteach

Algebra • Add 3 Numbers

What strategies help you add 3 numbers?

4

4 + 6

_

14

4

4 + 6

_

14

Choose a strategy. Circle two addends to add first. Write the sum. Then find the total sum.

1. 7

3 + 3

_

2. 2

2 + 8

_

3. 4

3 + 3

_

4. 5

5 + 4

_

13

4 + 6 make a 10.

10 + 4 =14B B4 + 4 = 8 is a doubles fact.

8 + 6 =14BB

10B

B B

B


Name

Grade 1R29Reteach

Lesson 3.12Reteach

Problem Solving • Use Addition StrategiesTory has 9 toys. Bob has 4 toys. Joy has 2 toys. How many toys do they have?

Unlock the Problem


how manythey have


Tory has 9 — toys.

Bob has 4 — toys.

Joy has 2 — toys.


Draw a picture to solve.

1. Rick has 7 books.He gets 2 more books. He then gets 2 more books. How many books does Rick have now?

toys

— toys

— books

— + — + — = —


Name

Reteach R30 Grade 1

Lesson 4.1Reteach

Count Back

Count back to subtract.

Use 9 . Count back 3.This shows counting back 3 from 9.

6 7 8 99 2 3 5 6 _

Use . Count back 1, 2, or 3.

Write the difference.

1. 5 2 1 5

2. 7 2 2 5

3. 6 2 3 5

5

7

6

—

—

— —

—

—


Name

Grade 1R31Reteach

Lesson 4.2Reteach

Use to model the number sentences.Draw to show your work.

1. What is 11 2 2?

Think 2 + — = 11

11 - 2 = —

2. What is 10 2 6?

Think 6 + — = 10

10 - 6 = —

3. What is 6 2 1?

Think 1 + — = 6

6 - 1 = —

Think

So

So

So

So

Think Addition to SubtractWhat is 7 2 4?

4 + 3 — = 7

7 - 4 = 3 —


Name

Reteach R32 Grade 1

Lesson 4.3Reteach

Use Think Addition to Subtract

Think of an addition fact to help you subtract.

11 - 6 = ? — 6 + 5 — = 11 11- 6 = 5 —

Think

Use an addition fact to help you subtract.

1. What is 9 2 4?

Use 4 + — = 9

So 9 - 4 = —

2. What is 10 2 6?

Use 6 + — = 10

So 10 - 6 = —

3. What is 12 2 5?

Use 5 + — = 12

So 12 - 5 = —

4. What is 8 2 5?

Use 5 + — = 8

So 8 - 5 = —


Name

Grade 1Reteach R33

Lesson 4.4Reteach

Use 10 to Subtract

Find 14 – 9.

Start with 9 cubes.

Make a 10.

Add cubes to make 14.

Count what you added.

You added 5 — .

So, 14 2 9 5 5 — .

Use . Make a ten to subtract. Draw to show your work.

1. 12 2 8 5 ? —

12 2 8 5

2. 15 2 9 5 ? —

15 2 9 5

Step 1

Step 2

Step 2

Step 1


Name

Grade 1Reteach R34

Lesson 4.5Reteach

Break Apart to Subtract

What is 14 2 5?

Start with 14. Make a ten.

Take 4 — from 14.

14 — 2 4 — 5 10 —

Then take 1 — more.

10 — 2 1 — 5 9 —

So, 142 5 5 9 —

Subtract.

1. What is 17 2 9?

Take 7 counters from 17.

17 2 7 5 —

Then take — counters from 10.

— 2 — 5 —

So, 17 2 9 5 —


Name

Grade 1Reteach R35

Lesson 4.6Reteach

Problem Solving • Use Subtraction Strategies Lara has 15 crackers. She gives some of them away. She has 8 left. How many crackers does she give away?

Unlock the Problem


how many


Lara has 15 — crackers.

Lara has 8 — crackers left.


Lara gives away 7 — crackers.

Act it out to solve. Draw to show your work.

1. Min has 13 marbles. She gives some away. She has 5 left. How many marbles does she give away?

Lara gives away

Min gives away — marbles.

crackers

12

8

15

7


Name

Grade 1R36Reteach

Lesson 5.1Reteach

Subtract There are 12 skunks in the woods.Some skunks walk away.There are 8 skunks still in the woods.How many skunks walk away?

Unlock the Problem

how many walk away

12 — skunks in the woods

4 — walk away

There are 15 frogs on a log. Some frogs hop away. There are 7 frogs still on the log. How many frogs hop away?

— frogs hop away

8 — skunks still in the woods

skunks

8 skunks still in the woods

DO NOT EDIT--Changes must be made through "File info" CorrectionKey=A

6 8 14

2 7 9

5 6 11

3 9 12

6 4 10


Name

Grade 1R37Reteach

Lesson 5.2Reteach

Record Related Facts Use the numbers to write four related facts.

Use the numbers to make related facts.

1. 6 + 8 = 14 B - 8 = 6 8 + B = 14 14 - 6 = B

2. B + 7 = 9 9 - B = 2 7 + 2 = 9 B - 2 = 7

3. 5 + B = 11 B - 6 = 5 6 + 5 = 11 11 - B = 6

4. 3 + 9 = 12 B - 9 = 3 B + 3 = 12 12 - B = 9

THINKEach number is in all four facts.

6 + 4 = 10

4 + 6 = 10

10 - 4 = 6

10 - 6 = 4


Name

Grade 1R38Reteach

Lesson 5.3Reteach

Identify Related Facts

If you know an addition fact, you will also know the related subtraction fact.

2 —

C 4 —

C 6 —

6 —

C 4 —

C 2 —

Add and subtract the related facts.

1.7 + 8 = —

15 - 8 = —

2.7 + 4 = —

11 - 4 = —

3.1 + 8 = —

9 - 8 = —

Both facts use 2, 4, and 6.

They are related facts.

+ =

=-


Name

Grade 1R39Reteach

Lesson 5.4Reteach

Use Addition to Check SubtractionYou can use addition to check subtraction.

You start with 8. Take apart to subtract.

Add to check. You end with 8.

Use to help you. Subtract. Then add to check your answer.

B + 3

_

B

7 - 3

_

B

8 - 3

_

B

5

B + 3

_

B

8

5

THINKPut the 5 and

3 back together.


Name

Grade 1R40Reteach

Lesson 5.5Reteach

Algebra • Unknown Numbers

Add or subtract to find the unknown numbers.

6 + B5 = 11

11 - 6 = B5

Use to find the unknown numbers. Write the numbers.

1.

4 + B = 13 13 - 4 = B

2.

7 + B = 15 15 - 7 = B

3.

8 + B = 14 14 - 8 = B

4.

9 + B = 16 16 - 9 = B

5. 9 + B = 18 18 - 9 = B

6. 8 + B= 16 16 - 8 = B

THINKI start with 6. I keep adding

cubes until there are 11. The missing number is 5.

A related fact is 11 - 6 = 5.


Name

Grade 1R41Reteach

Lesson 5.6Reteach

Algebra • Use Related Facts

Find 11 – 6.

Use counters to help you.

6 + 5 — = 11

5

1 1

611 - 6 = 5 —

Use counters. Write the missing numbers.

1. Find 13 - 8.

8 + — = 13

13 - 8 = —

13

8

2. Find 12 - 3.

3 + — = 12

12 - 3 = —

12

3

THINKStart with 6. How

many do I add to make 11?


Name

Grade 1R42Reteach

Lesson 5.7Reteach

Choose an OperationLiz has 15 stuffed animals. She gives away 6. How many stuffed animals are left?

9 stuffed animals

add subtract

15 - 6 = 9 Circle add or subtract.Write a number sentence to solve.

1. Misha has 11 crackers. He eats 2 crackers. How many crackers are left?

crackers

add subtract

=

2. Lynn has 5 shells.Dan has 7 shells. How many shells do Lynn and Dan have?

shells

add subtract

=

THINK Liz gives some away.

So, I subtract.Circle subtract.


Name

Grade 1R43Reteach

Lesson 5.8Reteach

Algebra • Ways to Make Numbers to 20

These are some ways to make the number 14.

Use to show each way. Cross out the way that does not make the number.

1. 7 8 - 1 3 + 4 2 + 3 + 1

2. 15 7 + 6 15 - 0 8 + 7

3. 13 4 + 4 + 5 9 - 4 6 + 7

4. 9 8 + 2 3 + 3 + 3 10 - 1

5. 18 9 + 9 9 - 9 18 - 0

7 + 7 = 14 4 + 4 + 6 = 14

14 - 0 = 14


Name

Grade 1R44Reteach

Lesson 5.9Reteach

Algebra • Equal and Not Equal

An equal sign means both sides are the same.

3 + 3 = 6 - 0 3 + 2 = 5 - 2

Which is true? Circle your answer. Which is false? Cross out your answer.

1. 7 – 5 = 5 – 2

8 – 8 = 6 – 6

2. 1 + 8 = 18

2 + 8 = 8 + 2

3. 4 + 3 = 5 + 2

7 + 3 = 4 + 5

4. 9 – 2 = 9 + 2

9 = 10 – 1

THINK3 + 3 = 6 and 6 - 0 = 6.

Is 6 the same as 6?

yes —

It is true.

THINK3 + 2 = 5 and 5 - 2 = 3.

Is 5 the same as 3?

no —

It is false.


Name

Grade 1R45Reteach

Lesson 5.10Reteach

Facts Practice to 20

Mr. Chi has 12 books. He sells 3 books. How many books are left?

What is 12 – 3?

Start at 12. Count 11, 10, 9 — .

So, 12 - 3 = 9 — .

3 + 9 = 12

12 - 3 = 9 —

Add or subtract.

1. 14 - 5 = — 2. 9 + 2 = — 3. 6 + 4 = —

4. 12 - 6 = — 5. 8 - 3 = — 6. 7 + 5 = —

7. 9 + 6 = — 8. 13 - 9 = — 9. 8 + 8 = —

THINKI can count back.

THINKI can use a related fact.

1 2 3 4 5 6 7 8

11 12 13 14 15 16 17 19

21 22 23 24 25 26 28 29

31 32 33 34 35 37 38 39

41 42 43 44 46 47 48 49

51 52 53 55 56 57 58 59

61 62 64 65 66 67 68 69

71 73 74 75 76 77 78 79

82 83 84 85 86 87 88 89

91 92 93 94 95 96 97 98 99

9

20

30

40

50

60

70

80

90

100

101102 103104105106107108109110

111112 113114115116117118119120

10

18

27

36

45

54

63

72

81


Name

Grade 1R46Reteach

Lesson 6.1Reteach

Count by Ones to 120

Count forward.Write the numbers.

108, 109 , 110 , 111

Use a Counting Chart. Count forward. Write the numbers.

1. 112, , , 2. 25, , , 3. 95, , , 4. 50, , ,

I find 108 on the chart.109 comes next.

1 2 3 4 5 6 7 8 9 10

11 12 13 14 15 16 17 18 19 20

21 22 23 24 25 26 27 28 29 30

31 32 33 34 35 36 37 38 39 40

41 42 43 44 45 46 47 48 49 50

51 52 53 54 55 56 57 58 59 60

61 62 63 64 65 66 67 68 69 70

71 72 73 74 75 76 77 78 79 80

81 82 83 84 85 86 87 88 89 90

91 92 93 94 95 96 97 98 99 100

101 102 103 104 105 106 107 108 109 110

111 112 113 114 115 116 117 118 119 120


Name

Grade 1R47Reteach

Lesson 6.2Reteach

Count by Tens to 120

Use the Counting Chart. Count forward by tens. Start on 4.

Use the Counting Chart to count by tens. Write the numbers.

1. Start on 5.

15, 25, 35, 45, , , , , 2. Start on 38.

48, 58, 68, , , , , , 3. Start on 26.

36, 46, , , , , ,

14, 24, 34, 44, 54,

64, 74, 84 , 94 ,

104 , 114


Name

Reteach R48 Grade 1

Lesson 6.3Reteach

Understand Ten and Ones

You can use to show ten and some ones. You can write ten and ones in different ways.

Use the model. Write the number three different ways.

1.

2.

3.

1 — ten 2 — ones

10 — + 2 —

12 —

— ten — ones

— + —

—

— ten — ones

— + —

—

— ten — ones

— + —

—


Name

Reteach R49 Grade 1

Lesson 6.4Reteach

15fifteen

14fourteen

12twelve

13thirteen

16sixteen

Make Ten and Ones

You can make 1 ten with 10 .

12 — ones = 1 — ten 2 — ones 1 — ten 2 — ones

Write how many tens and ones.

1.

1 — ten 5 — ones

2.

— ten — ones

3.

— ten — ones

4.

— ten — ones


Name

Grade 1R50Reteach

Lesson 6.5Reteach

Tens

You can put ones together Draw to show the 2 tens.to make tens.

20 ones = 2 tens 2 — tens = 20 —

Use . Make groups of ten. Draw the tens. Write how many tens. Write the number.1.

30 ones = 3 tens — tens = —

2.


3.


Tens Ones


Name

Grade 1R51Reteach

Lesson 6.6Reteach

There are 4 tens.There are 2 ones.This shows 42.

Tens and Ones to 50

You can use tens and ones to show a number.

4 tens 2 ones = 42 —

Use your MathBoard and to show the tens and ones. Write the numbers.

1.

1 ten 8 ones = 18 —

2.

2 tens 5 ones = —

3.

4 tens 7 ones = —

4.

3 tens 6 ones = —

DO NOT EDIT--Changes must be made through “File info” CorrectionKey=A

Tens Ones


Name

Grade 1R52Reteach

Lesson 6.7Reteach

Tens and Ones to 100

If you know the tens and ones, you can write the number.


Use your MathBoard and to show the tens and ones. Write the numbers.

1.


2.

6 tens 3 ones = —

3.

7 tens 7 ones = —

4.

8 tens 2 ones = —

There are 9 tens.There are 8 ones.The number is 98.

Tens Ones Tens Ones

Tens Ones Tens Ones


Name

Reteach R53 Grade 1

Lesson 6.8Reteach

Problem Solving • Show Numbers in Different WaysHow can you show the number 34 two different ways?

Unlock the Problem


two different ways to show a number


The number is 34 — .


1. Use to show 26 two different ways. Draw both ways.

First Way Second Way

THINKYou can

trade 1 ten for 10 ones.


Name

Reteach R54 Grade 1

Lesson 6.9Reteach

Model, Read, and Write Numbers from 100 to 110

What is 10 tens and 2 more?

10, 20, 30, 40, 50, 60, 70, 80, 90, 100 , 101 , 102 10 tens and 2 more = 102

Use to model the number. Write the number.

1. 10 tens and 3 more

—


—


—


—

Count by tens. Then count by

ones.

10 20 30 40 50 60 70 80 90 100 111 112 113110


Name

Grade 1R55Reteach

Lesson 6.10Reteach

Model, Read, and Write Numbers from 110 to 120

What is the number?

The number is 113 — .

Use to model the number. Write the number.

1.

—

2.

—

3.

—

4.

—

Count by tens. Then count by ones.


Name

Reteach R56 Grade 1

Lesson 7.1Reteach

Algebra • Greater Than

You can compare numbers to find which is greater.

48 — is greater than 24 — .

48 — > 24 —

65 — is greater than 62 — .

65 — > 62 —

Draw lines to match. Write the numbers to compare.

1.

— is greater than — .

— > —

2.

— is greater than — .

— > —

43

55

51

34

65

62

48

24

Name


Grade 1R57Reteach

Lesson 7.2Reteach

Algebra • Less Than

You can compare numbers to find which is less.

23 — is less than 26 — .

23 — < 26 —

43 — is less than 65 — .

43 — < 65 —

Draw lines to match. Write the numbers to compare.

1.

— is less than — .

— < —

2.

— is less than — .

— < —

23

26

65

43

37

31

74

44


Name

Grade 1R58Reteach

Lesson 7.3Reteach

Algebra • Use Symbols to Compare

You can use symbols to compare numbers.

Write >, <, or =. Complete the sentence.

1.

51 C 57

51 is less than ——— 57.

2.

29 C 29 29 29.

3.

35 C 33 35 33.

4.

48 C 55 48 55.

This symbol means

is equal to.

This symbol means

is less than.

This symbol means

is greater than.

15 C 18 18 C

18 23 C 18< = >

<

5 7 8 10 11

17 18 20 21 23

5 7 8 10 11

Name


Grade 1R59Reteach

Lesson 7.4Reteach

Problem Solving • Compare NumbersAnthony has the number cards shown. He gives away the cards with numbers less than 6 and greater than 9. Which cards does Anthony have now?

Unlock the Problem


the number cards ————

that Anthony has now


number cards < 6 —

and > 9 — .


Anthony has number cards 7 — and 8 — .

Make a model to solve.

1. Emily has the number cards shown.She gives away the cards less than 19 and greater than 22. Which cards does she have now?

Emily has — and — .

THINKCross out the numbers Anthony gives away.

35

24 34 44

22


Name

Grade 1R60Reteach

Lesson 7.5Reteach

10 More, 10 Less

24 is 10 less 44 is 10 more than 34. than 34.

Write the numbers that are 10 less and 10 more.

1.

2.


Grade 1R61Reteach

Add and Subtract Within 20

You can use strategies to add or subtract.

What is 5 + 6? What is 12 - 4?

Lesson 8.1Reteach

I can use doubles plus one.

I can use a related fact.

5 + 5 = 10

So, 5 + 6 = 11 — .

8 + 4 = 12

So, 12 - 4 = 8 — .

• count on• doubles• doubles plus

one

• count back• related facts• doubles minus

one

1. 12 - 3 =

3. 10 - 5 =

5. 7 + 8 =

2. 8 + 9 =

4. 13 - 7 =

6. 6 + 6 =

Add or subtract.

Name


Grade 1R62Reteach

Add Tens

What is 10 + 30?

1 ten + 3 tens = 4 — tens

10 + 30 = 40 —

Use . Draw to show tens. Write how many tens. Write the sum.

1.

1 ten + 8 tens = — tens

10 + 80 = —

2.

4 tens + 3 tens = — tens

40 + 30 = —

3.


20 + 60 = —

4.


50 + 30 = —

Use . Start with 1 ten.

Add 3 more tens. Draw the tens.



Grade 1R63Reteach

Subtract Tens

What is 60 – 40?

6 tens - 4 tens = 2 — tens

60 - 40 = 20 —

Use . Draw to show tens. Write how many tens. Write the difference.

1.

7 tens - 4 tens = — tens

70 - 40 = —

2.


90 - 50 = —

3.


50 - 20 = —

4.

8 tens - 7 tens = — ten

80 - 70 = —

Use . Show 6 tens.

Take away 4 tens. 2 tens are left.


1 2 3 4 5 6 7 8

11 12 13 14 15 16 17 19

21 22 23 24 25 26 28 29

31 32 33 34 35 37 38 39

41 42 43 44 46 47 48 49

51 52 53 55 56 57 58 59

61 62 64 65 66 67 68 69

71 73 74 75 76 77 78 79

82 83 84 85 86 87 88 89

91 92 93 94 95 96 97 98 99

9

20

30

40

50

60

70

80

90

100

10

18

27

36

45

54

63

72

81


Grade 1R64Reteach

Use a Hundred Chart to AddYou can count on to add on a hundred chart.

Start at 21. Move right to count on 3 ones. Count

22 , 23 , 24

21 + 3 = 24

Start at 68. Move down to count on 3 tens. Count

78 , 88 , 98

68 + 30 = 98

Use the hundred chart to add. Count on by ones.

1. 46 + 2 = 2. 63 + 3 =

Count on by tens.

3. 52 + 30 = 4. 23 + 40 =



Grade 1R65Reteach

Lesson 8.5Reteach

Use Models to Add

Add ones to a two-digit number.

21 + 3 = 24

Add tens to a two-digit number.

21 + 30 = 51

Use . Draw to show how to add the ones or tens. Write the sum.

1. 15 + 2 = 2. 15 + 20 =

THINKDraw 2 tens and 4 ones.

THINK

Name


Grade 1R66Reteach

Lesson 8.6Reteach

Make Ten to Add

What is 17 + 5?Step 1

Use .

Show 17.

Use .

Show 5.

Step 2

Make a ten.

Step 3 Add. 20 + 2 = 22 —

So, 17 + 5 = 22 — .

Draw to show how you make a ten. Find the sum.1. What is 16 + 8?

20 + 4 = 24

So, 16 + 8 = __ .

Name

Tens Ones

Tens Ones


Grade 1R67Reteach

Lesson 8.7Reteach

3 tens + 4 tens = __ tens

4 ones + 2 ones = __ ones

__ tens + __ ones

__ + __ = __

Show 25.Add 25 and 22.

Show 22.

34 +42

_

25 +22

_

47

Use Place Value to Add

You can use tens and ones to help you add.

How many tens? 2 tens + 2 tens = 4 tens

How many ones? 5 ones + 2 ones = 7 ones

4 __ tens + 7 __ ones

40 __ + 7 __ = 47 __

Use tens and ones to add.

1. Add 34 and 42.

Name


Grade 1R68Reteach

Lesson 8.8Reteach

Problem Solving • Addition Word ProblemsMorgan plants 17 seeds. Amy plants 8 seeds. How many seeds do they plant?

Unlock the Problem


how many they plant


Morgan plants 17 — seeds.

Amy plants 8 — seeds.


— seeds.

Draw to solve. Circle your reasoning.

1. Edward buys 24 tomato plants. He buys15 pepper plants. How many plants does he buy?

— plants

count on ones make a ten add tens and ones

count on tens make a ten add tens and ones

seeds

Name

Reteach Grade 1R69© Houghton Mifflin Harcourt Publishing Company

Lesson 8.9Reteach

Related Addition and SubtractionYou can count up and back by tens to add and subtract.

Start at 68. Move down to count up by 3 tens. Count

78 , 88 , 98

68 + 30 = 98

Start at 98. Move up to count back by 3 tens. Count

88 , 78 , 68

98 - 30 = 68

Use the hundred chart to add and subtract. Count up and back by tens.

1. 42 + 20 = 2. 24 + 60 =

62 - 20 = 84 - 60 =

1 2 3 4 5 6 7 8

11 12 13 14 15 16 17 19

21 22 23 24 25 26 28 29

31 32 33 34 35 37 38 39

41 42 43 44 46 47 48 49

51 52 53 55 56 57 58 59

61 62 64 65 66 67 68 69

71 73 74 75 76 77 78 79

82 83 84 85 86 87 88 89

91 92 93 94 95 96 97 98 99

9

20

30

40

50

60

70

80

90

100

10

18

27

36

45

54

63

72

81

Name


R70 Grade 1

Practice Addition and Subtraction

You can use models to add and subtract.

13 + 5 = 18 —

90 - 60 = 30 —

Add or subtract.

1. 33 + 6 = — 2. 10 + 10 = — 3. 15 - 8 = —

4. 6 + 7 = — 5. 54 + 23 = — 6. 71 + 8 = —

7. 5 + 5 = — 8. 8 - 8 = — 9. 16 + 3 = —

10. 55 + 12 = — 11. 9 - 7 = — 12. 30 - 10 = —


longest

shortestlongest

shortest


Name Lesson 9.1Reteach

Order Length

You can put objects in order by length.

These pencils are in order from shortest to longest.

These pencils are in order from longest to shortest.

Draw three lines in order from shortest to longest.

1. shortest

2.

3. longest

Draw three lines in order from longest to shortest.

4. longest

5.

6. shortest


Lesson 9.2Reteach

Indirect Measurement

Clue 1: A marker is shorter than a pencil. Clue 2: The pencil is shorter than a ribbon.

Is the marker shorter or longer than the ribbon?

marker

pencil

ribbon

So, the marker is shorter than the ribbon.

Use the clues. Write shorter or longer to complete the sentence. Then draw to prove your answer.

1. Clue 1: A string is longer than a straw.Clue 2: The straw is longer than a pencil. Is the string shorter or longer than the pencil?

string

straw

pencil

The string is than the pencil.

Draw Clue 1. Draw Clue 2.

Then compare the marker and the ribbon.

Draw Clue 1. Draw Clue 2.

Then compare the string and the pencil.

Name

Glue


Lesson 9.3Reteach

Use Nonstandard Units to Measure Length

You can use to measure length.

Line up the . Count how many.

about 5 —

Use real objects. Use to measure. Count how many.

1.

about —

2.

about —

3.

about —

4.

about —

Name

10


Lesson 9.4Reteach

Make a Nonstandard Measuring Tool

About how long is the ribbon? Count to measure.

about

Use real objects and the measuring tool you made. Measure.

1.about

2.about

3.about

Count on by ones.

Name

1 2 3

1 2 3 4

1 2 3 4 5

shortest longest Measureto


Lesson 9.5Reteach

Problem Solving • Measure and CompareThe gray ribbon is 3 long. The white ribbon is 4 long. The black ribbon is 1 longer than the white ribbon. Draw and color the length of the ribbons in order from shortest to longest.

What do I need to find?order the ribbons from


the ribbons using paper clips.


shortest

longest

1. The ribbon is the shortest ribbon.

2. The ribbon is the longest ribbon.

about 3

about 4

about 5

Name

8910

11 12

7 6 543

21

8910

11 12

7 6 543

21

8910

11 12

7 6 543

21

8910

11 12

7 6 543

21

8910

11 12

7 6 543

21

8910

11 12

7 6 543

21

8910

11 12

7 6 543

21

8910

11 12

7 6 543

21

8910

11 12

7 6 543

21

8910

11 12

7 6 543

21

8910

11 12

7 6 543

21

8910

11 12

7 6 543

21


Lesson 9.6Reteach

Time to the Hour

Look at the hour hand.

The hour hand points to the 8 .

It is 8:00 .

Look at where the hour hand points. Write the time.

1. The hour hand points to the .

It is .

2. The hour hand points to the .

It is .

3. 4. 5.

Name

8910

11 12

7 6 543

21

8910

11 12

7 6 543

21

8910

11 12

7 6 543

21

8910

11 12

7 6 543

21

8910

11 12

7 6 543

21

8910

11 12

7 6 543

21

8910

11 12

7 6 543

21

8910

11 12

7 6 543

21

8910

11 12

7 6 543

21

8910

11 12

7 6 543

21

8910

11 12

7 6 543

21

8910

11 12

7 6 543

21


Lesson 9.7Reteach

The hour hand points halfway between

the 9 and the 10 .

It is half past 9:00 .

Look at where the hour hand points. Write the time.

1. The hour hand points halfway between

the and the .

It is .

2. The hour hand points halfway between

the and the .

It is .

3. 4. 5.

Name

Time to the Half Hour

8910

11 12

7 6 543

21

8910

11 12

7 6 543

21

8910

11 12

7 6 543

21

8910

11 12

7 6 543

21

8910

11 12

7 6 543

21

8910

11 12

7 6 543

21

8910

11 12

7 6 543

21

89910

11 12

7 66 5433

21

10

15

20

2530

35

40

45

50

560

55

8910

11 12

7 6 543

21

8910

11 12

7 66 5433

21

10

15

20

2530

5


Lesson 9.8Reteach

Tell Time to the Hour and Half HourThe short hand is the hour hand. It shows the hour.

The long hand is the minute hand. It shows the minutes after the hour.

There are 60 minutes in one hour.

There are 30 minutes in a half hour.

Write the time.

1. 2. 3.

8:308:00

Name

8910

11 12

7 6 543

21

8910

11 12

7 6 543

21

8910

11 12

7 6 543

21

8910

11 12

7 6 543

21

8910

11 12

7 6 543

21

8910

11 12

7 6 543

21

8910

11 12

7 6 543

21

8910

11 12

7 6 543

21

8910

11 12

7 6 543

21

8910

11 12

7 6 543

21


Lesson 9.9Reteach

Practice Time to the Hour and Half Hour

The hour hand points to 8.

The minute hand points to 12.

The hour hand points between 8 and 9. The minute hand points to 6.

Use the hour hand to write the time. Draw the minute hand.

1. 2. 3.

8:00 8:30

Name

S oup

S oup


R80

Lesson 10.1Reteach

Read Picture Graphs

A picture graph uses pictures to show how many.Count the in each row.

Snack We Like

apple

pretzel

Each stands for 1 child who chose that snack.

There are 5 children who chose .

There are 3 children who chose .

Use the picture graph to answer each question.

What We Ate for Lunchsandwich

soup

Each stands for 1 child.

1. Which lunch did more children choose? Circle.

2. How many children chose ? children

3. How many children chose S oup ? children

Name

Black and White Carsblack

white

Each stands for 1 car.


R81

Lesson 10.2Reteach

Make Picture Graphs

Are there more black cars or white cars? Complete the picture graph to find out.

Use the picture graph to answer each question.

1. How many are there?

2. How many are there?

3. Are there more or ? Circle.

Draw a in the graph to show

each car.

Cross out each car as you

count.

Name

Kin

ds o

f S

nack

s

Number of Children

Our Favorite Snack

0

apple

pretzel

yogurt

1 2 3 4 5 6


R82

Lesson 10.3Reteach

Read Bar Graphs

A bar graph uses a bar to show how many. This graph shows 6 children chose .

Use the bar graph to answer the question.



3. Circle the snack the most children chose.

4. Circle the snack the fewest children chose.

The longest bar shows the

snack most children chose.

Name

Item

s

Number of Items

Desks and Doors in Our Classroom

0 1 2 3 4 5 6 7 8 9 10

desks

doors

0 1 2 3 4 5 6

sheep

chicks

Number of Animals

Animals at the Farm

Kin

ds o

fA

nim

als


R83

Lesson 10.4Reteach

Make Bar Graphs

Are there more or in your classroom?1. Make a bar graph to find out.

2. How many are in your classroom?

3. Are there more or in your classroom? Circle.

Make a bar graph to show each animal in the picture.

Cross out each animal as you show

it in the graph.

Name


R84

Lesson 10.5Reteach

Read Tally Charts

Some children named their favorite collections. Each stands for 1 child.Each stands for 5 children.

Our Favorite Thing to Collect Total

shells1 2 3 4 4

stamps 5 6 7 7

More children like to collect stamps .

Complete the tally chart.

Do you have a pet? Total

yes

no

Use the tally chart to answer each question. 1. How many children have a pet? children

2. How many children do not have a pet? children

3. Did more children answer yes or no?

Name


R85

Lesson 10.6Reteach

Make Tally ChartsThe picture shows shapes. Make a tally chart to show how many of each shape.

Shapes in the Picture Total

circles 6stars 3triangles 8

Use the tally chart to answer each question.

1. How many are there? 2. How many more than are there?

more

3. Which shape is therethe most of? Circle.

Cross out each shape as you

count.

Name

Beads Ava Hascirclesquaretriangle

0 1 2 3 4 5 6


R86

Lesson 10.7Reteach

Problem Solving • Represent DataAva has these beads to make a bracelet. How can you find how many beads she has?

Unlock the Problem


how many

Ava has


the number of , ,

and in the picture


Use the graph. Write how many. Add to solve.

1. 4 1 1 5

How many beads does Ava have? beads

beads

Color the first bar to show there are

4 circles.

Name


R87


Three-Dimensional Shapes

curved surface curved and flat surfaces

sphere cone cylinder

flat surfaces

rectangular prism cube

Color to sort the shapes into three groups.

1. only flat surfaces

2. only a curved surface

3. both curved and flat surfaces

cone cube

sphere rectangular prism

cylinder


R88


Combine Three-Dimensional Shapes

Put shapes together to make a new shape.

Use three-dimensional shapes.

Combine.Which new shapes can you make? Circle them.

1.

2.

and do not make this shape.


R89


Make New Three-Dimensional Shapes

Build a shape. Copy the shape.

Combine them. Circle a new shape you can make.

Use three-dimensional shapes.

Build these shapes.

Circle the new shape you can make. Cross out the shape you cannot make.

1.

2.

You cannot make this new shape. The first shapes did

not stay the same.


R90


Problem Solving • Take Apart Three-Dimensional ShapesKate has , , , and . She built a tower. Which shapes did Kateuse to build the tower?

Unlock the Problem


which shapesKate used to build the tower


Kate has these shapes.

Show how to solve the problem. Find the matching shapes.

Use three-dimensional shapes. Circle your answer.

1. Which shapes did Marvin use to build this bench?

rectangle squarecircle


R91


Two-Dimensional Shapes on Three-Dimensional Shapes

Look at the shape. Circle the flat surfaces it has.

1.

2.

3.


R92


Sort Two-Dimensional Shapes

Read the sorting rule. Circle the shapes that follow the rule.

1. 4 sides

2. curved and closed

3. 3 vertices

A square is a special kind of

rectangle.

Circles are curved and closed.

Triangles have 3 sides and 3 vertices.

Rectangles have 4 sides and 4 vertices.

side

vertex


R93


Describe Two-Dimensional Shapes

Write the number of straight sides or vertices.

1. triangle

3 sides

2. square

vertices

3. hexagon

vertices

4. trapezoid

sides

5. triangle

vertices

6. square

sides

This shape has 4 straight sides and 4 vertices.


R94


Combine Two-Dimensional Shapes

You can put shapes together to make a new shape.

Use pattern blocks. Draw to show the blocks. Write how many blocks you used.

1. How many make a ?

2. How many make a ?

3 make

a .

make a .

make a .


R95


Combine More ShapesCombine shapes to make a new shape.

2 Shapes Combine New Shape

Circle the shapes that can combine to make the new shape.

1.

2.

3.


R96


Problem Solving • Make New Two-Dimensional ShapesLuis wants to use to make a .How many does he need?

Unlock the Problem


how Luis can make a

using


Luis uses


make a .

Use shapes to solve. 1. Meg wants to use

to make a . make a .

2


R97


Find Shapes in Shapes

Which two pattern blocks make this shape?

Use two pattern blocks to make the shape. Circle the blocks you use.

1. 2.

3. 4.


R98


Take Apart Two-Dimensional ShapesUse pattern blocks to help you find the parts of a shape.

Use 2 to find parts of .

Draw a line to show the parts.

Use pattern blocks. Draw a line to show the parts.1. Show 2 . 2. Show 2 .

3. Show 2 . 4. Show 2 .


R99


Equal or Unequal Parts

Equal Parts or Equal Shares

Unequal Parts or Unequal Shares

Circle the shapes that show equal parts. Cross out the shapes that show unequal parts. 1. 2.

3. 4.

The parts are the same size.

The parts are not the same size.


R100


whole

whole

halves

halves

Halves

How can you show halves?

1 whole 2 equal shares or 2 halves

Draw a line to show halves. Write the numbers. 1.

2.


R101


Fourths

How can you show fourths?

4 fourths or 4 quarters

Draw lines to show fourths. Write the number. 1.

2. Draw lines to show quarters. Write the number.

There are 4 equal shares.

whole

whole

fourths

fourths

1 whole

Name Lesson 1Reteach


GRR1

Algebra • Ways to Expand Numbers

You can write a number different ways.

Count the tens. Count the ones.

4 — tens 5 — ones

4 tens is the same as 40 — .

5 ones is the same as 5 — .

40 — 1 5 — is the same as 45 — .

Write how many tens and ones. Write the number two different ways.1.

— tens — ones

— 1 —

—

2.

— tens — ones

— 1 —

—

GRR2



Identify Place ValueThis shows the number 136.

136 has 1 —

hundred 3 — tens 6

— ones.

Write the numbers in the table.

Draw to show 136.

Use your MathBoard and to show the number. Trace to draw the quick picture. Write how many hundreds, tens, and ones.

tenshundreds ones

1 — 3

— 6 —

Draw for

Draw for

Draw for

1.

128tenshundreds ones

— —

—



GRR3

. means is greater than, means is less than5 means is equal to

Use Place Value to Compare NumbersYou can use models and symbols to compare numbers.

Use the model to compare 142 and 147.

Step 1 Compare the hundreds. 1 hundred 5 1 hundred

Step 2 Compare the tens. 4 tens 5 4 tens

Step 3 Compare the ones. 2 ones , 7 ones

So, 142 is less than 147. 142 C 147

Use if you need to.Write the numbers and compare. Write ,, ., or 5.

1.

168 C166Compare the numbers using ., ,, or 5. You may wish to make a model to check.

<

2. 151 C151



GRR4

Algebra • Addition Function TablesFollow the rule to complete a function table.

At the top of the table is a rule.

The rule is Add 7 —— .

To complete the table, Add 7 —— to each number on the left.

Add 7

5 126 137 14

1. 2. 3. Add 2

7

8

9

Follow a rule to complete the table.

Add 5

4

6

8

Add 8

4

5

6



GRR5

Algebra • Subtraction Function TablesFollow the rule to complete a function table.

At the top of the table is a rule.

The rule is Subtract 5 ——— .

To complete the table, Subtract 5 ———

from each number on the left.

Subtract 5

12 713 814 9

1. 2.

3. Subtract 3

5

7

9

Subtract 4

7

9

11


Subtract 6

9

11

13



GRR6

Algebra • Follow the RuleRead the rule at the top of each table.Circle the table that tells you to add.Underline the table that tells you to subtract.Then complete both tables.

Add 1

3 45 67 89 10

Subtract 1

3 25 47 69 8

Add 3

10

9

8

7

Subtract 3

10

9

8

7


1. 2.



RGRR7Reteach Grade 1© Houghton Mifflin Harcourt Publishing Company

RGRR7Reteach Grade 1© Houghton Mifflin Harcourt Publishing Company

RGRR7

Add 3 NumbersUsing a strategy can help you add 2 numbers.

Start with 2 numbers that make a 10.

2 61 8

1

Start with 2 numbers that will help you to make doubles. 2 61 8

1

Start with 2 numbers to count on.

2 61 8

Start with 2 numbers. Trace the lines. Circle the strategy you use. Write the numbers. Find the sum.

1. 74

1 3

make a 10

doubles

count on

2.

15

1 6

make a 10

doubles

count on

3. make a 10

doubles

count on

4. 54

1 6

make a 10

doubles

count on

1 1

1 1

1

75

1 1



GRR8

Tens Ones Tens Ones

Tens Ones Tens Ones

Tens Ones Tens Ones

Add a One-Digit Number to a Two-Digit Number

Add to find how many tens and ones in all.

Write the sum.

Tens Ones

Add. Write the sum.

1. 321 4

2. 121 7

3. 531 5

4. 471 2

5. 681 1

6. 951 3

There are 4 tens. There are

5 ones. The sum is 45.

431 2

45



GRR9

Add Two-Digit Numbers

Add to find how many tens and ones in all.

Write the sum.Tens Ones

Add. Write the sum.

1. 311 24

2. 651 14

3. 631 25

4. 421 34

5. 811 17

6. 231 33

There are 3 tens. There are 5 ones.

The sum is 35.

Tens Ones Tens Ones

Tens Ones Tens Ones

Tens Ones Tens Ones

221 13

35



GRR10

Repeated AdditionEqual groups have the same number of items in each group. You can add equal groups to find how many in all.

There are 5 —

equal groups of fish.

Each group has 2 —

fish.Add to find how many fish in all.

You can use to make a model.

2 —

1 2 —

1 2 —

1 2 —

1 2 —

5 10 —

There are 10 —

fish in all.

Number of Equal Groups

Number in Each Group

How many in all?

1. 3 5 — 1 — 1

— 5 —

2. 4 2 — 1 — 1

— 1 — 5

—

Use your MathBoard and . Make equalgroups. Complete the addition sentence.



GRR11

Use Repeated Addition to Solve ProblemsLoren has 3 jars. She wants to put 5 flowers in each jar.How many flowers does Loren need?

Draw a picture to show the story.

Step 1 Draw 3 — jars.

Step 2 Draw 5 — flowers in each jar.Step 3 Find how many in all.

Loren needs 15 — flowers.

Draw pictures to show the story. Write the addition sentence to solve.1. Matt plays with 2 friends. He wants

to give each friend 4 cars. How many cars does Matt need?

— cars

2. Liz shops with 3 friends. She wants to buy each friend 3 hair clips. How many hair clips does Liz need?

— hair clips

5 — 1 5

— 1 5 — 5 15

—

— 1 — 5 —

— 1 — 1 — 5 —



GRR12

Choose a Non-Standard Unit to Measure LengthYou can choose a nonstandard unit to measure the length of real objects.A is short. Use it to measure short objects.A is longer. Use it to measure long objects.Circle the unit you would use.Use to measure .

Use to measure .

Use real objects. Circle the unit you would use to measure. Then measure.

Object Unit Measurement

1. about

2. about

3. about



GRR13

Use a Non-Standard RulerUse the to measure the marker.

How many long is the string?

1.

2.

7

The marker is about 7 —

long.

about — long

about — long



GRR14

Compare Lengths

The black ribbon is shortest .

The gray ribbon is longest .

Use to measure each ribbon.

Color the shortest ribbon blue.

Color the longest ribbon yellow.

Then measure with . Write the lengths.

1.

about 8 — long

about 10 — long

about 6 — long

about — long

about — long

about — long



GRR15

8910

11 12

7 6 543

21

8910

11 12

7 6 543

21

Time to the Hour and Half Hour

Read the clock. Write the time.

1. 2.

3. 4.

—

—

—

—

8910

11 12

7 6 543

21

8910

11 12

7 6 543

21

8910

11 12

7 6 543

21

8910

11 12

7 6 543

21

Time to the Hour Time to the Half Hour

minute hand points to 12

minute hand points to 6

hour hand points to the hour number

hour hand points halfway between the hour number and the next number

3:00 3:30



GRR16

Use a Picture Graph

Grapes We Like

green grapes

purple grapes


How many children chose ?

5 — children

Which grapes did fewer children chose?

purple grapes

Use the picture graph to answer the questions.

1. How many children are there in all?

— children

2. How many children are

wearing ?

— children

3. What color shirts are most of the children wearing?

—

4. How many more children

are wearing than ?

— children

Count the in the row.THINK

Which row has fewer ?

Our Shirt Colors

red

yellow


blue



GRR17

Use a Bar Graph

Kin

d of

Ani

mal

Number of Animals

Animals Seen at the Pond

0 1 2 3 4 5 6

turtle

salamander

frog

How many were seen at the pond?

6 — turtles

Which animal was seen the least?

Use the bar graph to answer the questions.

1. How many animals in all were seen at the pond?

— animals

2. How many were seen at the pond?

—

3. How many fewer than were seen?

— fewer

4. Were more or more seen?

more

Read the number below

the end of the bar.THINK Which bar

is the shortest?

Name


GRR18

Lesson 18Reteach

Take a SurveyWhen you take a survey, you collect information. Tally marks help you keep track of the information you collect.

Chris took a survey of his friends’ favorite lunch.The tally chart shows their answers.

3 — children chose sandwich.

6 — children chose pizza.

1 — child chose salad.

The most children chose pizza ———

.

1. Take a survey.Ask 10 classmates which lunch is their favorite. Use tally marks to show their answers.

2. Did more children choose pizza or taco?

3. The most children chose .

Our Favorite Lunch

Lunch Tally

sandwich

pizza

salad

Our Favorite Lunch

Lunch Tally

sandwich

pizza

salad

taco



GRR19

Identify Shapes

vertex

vertex

side side

side vertex

triangle

3 sides, 3 vertices

hexagon

6 sides, 6 vertices

square trapezoidrectangle

4 sides, 4 vertices

Circle to answer the question. Write to name the shape.

1. Which shape has 4 vertices?

2. Which shape has 3 vertices?

3. Which shape has 4 sides? 4. Which shape has 6 sides?



GRR20

Equal Shares

2 — equal shares

half ofthe circle

4 — equal shares

a fourth of the circle

1.

fourths —

2.

—

3.

—

4.

—

Write to name the equal shares.

halves fourths

1st grade go math reteach

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