grado 2 matemáticas...11 8 1 8 5 2 4 1 5 5 4 5 1 6 5 6 8 1 7 5 8 8 1 9 5 10 6 1 5 5 12 7 1 8 5 13...

31
Grado 2 Matemáticas Paquete de actividades para el hogar del maestro Este Paquete de actividades para el hogar incluye un conjunto de 22 problemas prácticos que están alineados con importantes conceptos de matemáticas en los que los estudiantes ya han trabajado durante este año. Debido a que el grado de avance varía de un salón a otro, siéntase con la libertad de seleccionar las páginas que se alineen con los temas que sus estudiantes ya han cubierto. El Paquete de actividades para el hogar incluye instrucciones para los padres que se pueden imprimir y enviar a casa. Este es un Paquete de actividades para el hogar. La Guía del maestro incluye los mismos conjuntos de práctica que la versión del estudiante, con respuestas como referencia. Teacher Packet © 2020 Curriculum Associates, LLC. All rights reserved. ¡Mire los conceptos de Matemáticas del Grado 2 que cubre este paquete!

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Page 1: Grado 2 Matemáticas...11 8 1 8 5 2 4 1 5 5 4 5 1 6 5 6 8 1 7 5 8 8 1 9 5 10 6 1 5 5 12 7 1 8 5 13 Which strategy did you use to solve problem 12? Explain why. Add. Using Doubles and

Grado 2 Matemáticas Paquete de actividades para el hogar del maestro

Este Paquete de actividades para el hogar incluye un conjunto de 22 problemas prácticos que están alineados con importantes conceptos de matemáticas en los que los estudiantes ya han trabajado durante este año.

Debido a que el grado de avance varía de un salón a otro, siéntase con la libertad de seleccionar las páginas que se alineen con los temas que sus estudiantes ya han cubierto.

El Paquete de actividades para el hogar incluye instrucciones para los padres que se pueden imprimir y enviar a casa.

Este es un Paquete de actividades para el hogar. La Guía del maestro incluye los mismos conjuntos de práctica que la versión del estudiante, con respuestas como referencia.

Teacher Packet

© 2020 Curriculum Associates, LLC. All rights reserved.

¡Mire los conceptos de Matemáticas del Grado 2 que cubre

este paquete!

Page 2: Grado 2 Matemáticas...11 8 1 8 5 2 4 1 5 5 4 5 1 6 5 6 8 1 7 5 8 8 1 9 5 10 6 1 5 5 12 7 1 8 5 13 Which strategy did you use to solve problem 12? Explain why. Add. Using Doubles and

© 2020 Curriculum Associates, LLC. All rights reserved. 2

Teacher Packet

ConceptConcepto

PracticePráctica

Fluency and Skills PracticeFluidez y práctica de destrezas

PagePágina

Understanding Addition and Subtraction Strategies

Comprender estrategias de suma y resta

1Adding by Counting On and Making a Ten(Contar hacia delante y formar una decena para sumar)

3

2Using Doubles and Doubles Plus 1(Usar dobles y dobles más 1)

4

3Counting On and Making a Ten to Subtract(Contar hacia delante y formar una decena para restar)

5

Understanding Addition and Subtraction Word Problems

Comprender problemas verbales de suma y resta

4Solving Take-Apart Word Problems(Resolver problemas verbales para separar)

6

5Solving Comparison Word Problems(Resolver problemas verbales de comparación)

8

6Ways to Solve Two-Step Problems(Cómo resolver problemas de dos pasos)

9

7Ways to Model Word Problems(Cómo representar problemas verbales)

10

Understanding Addition and Subtraction of Multi-Digit Numbers

Comprender suma y resta de números de varios dígitos

8Diff erent Ways to Show Addition(Diferentes maneras de mostrar la suma)

11

9Subtracting by Adding Up(Sumar para restar)

12

10Subtracting by Regrouping( Reagrupar para restar)

14

11Strategies to Find a Missing Addend(Estrategias para hallar un sumando que falta)

15

Understanding Place Value Concepts and Regrouping

Comprender el valor posicional y la reagrupación

12Finding the Value of Three-Digit Numbers(Hallar el valor de números de tres dígitos)

17

13Writing Three-Digit Numbers(Escribir números de tres dígitos)

18

14Ways to Compare Three-Digit Numbers(Cómo comparar números de tres dígitos)

20

15Adding and Regrouping Ones(Sumar y reagrupar unidades)

21

16Adding and Regrouping Tens(Sumar y reagrupar decenas)

22

17Regrouping Tens to Ones(Reagrupar decenas a unidades)

23

18Regrouping Hundreds to Tens(Reagrupar centenas a decenas)

24

19Adding Four Two-Digit Numbers(Sumar cuatro números de dos dígitos)

25

Understanding Length

Comprender la longitud

20Measuring in Inches and Centimeters(Medir en pulgadas y centrímetros)

26

21Measuring in Inches and Feet(Medir en pulgadas y pies)

28

22Measuring in Centimeters and Meters (Medir en centímetros y metros)

30

Grado 2 Conceptos de matemáticas cubiertos en este paquete

Page 3: Grado 2 Matemáticas...11 8 1 8 5 2 4 1 5 5 4 5 1 6 5 6 8 1 7 5 8 8 1 9 5 10 6 1 5 5 12 7 1 8 5 13 Which strategy did you use to solve problem 12? Explain why. Add. Using Doubles and

© 2020 Curriculum Associates, LLC. All rights reserved. 3©Curriculum Associates, LLC Copying is permitted for classroom use.

Name:

Fluency and Skills Practice

1 8 1 2 5

3 6 1 4 5

5 7 1 3 5

7 9 1 1 5

9 5 1 5 5

11 9 1 2 5

13 8 1 4 5

15 6 1 9 5

2 8 1 3 5

4 6 1 8 5

6 7 1 5 5

8 9 1 6 5

10 5 1 8 5

12 2 1 9 5

14 4 1 8 5

16 6 1 7 5

17 Which strategy did you use to solve problem 11? Explain.

Add.

Adding by Counting On and Making a Ten

Answers will vary. Possible answer: I made a 10 with 9 1 1 and then added 1 more to get 11.

10

10

10

10

10

11

12

15

11

14

12

15

13

11

12

13

Teacher Packet

Page 4: Grado 2 Matemáticas...11 8 1 8 5 2 4 1 5 5 4 5 1 6 5 6 8 1 7 5 8 8 1 9 5 10 6 1 5 5 12 7 1 8 5 13 Which strategy did you use to solve problem 12? Explain why. Add. Using Doubles and

© 2020 Curriculum Associates, LLC. All rights reserved. 4©Curriculum Associates, LLC Copying is permitted for classroom use.

Name:

Fluency and Skills Practice

1 4 1 4 5

3 6 1 6 5

5 7 1 7 5

7 9 1 9 5

9 5 1 5 5

11 8 1 8 5

2 4 1 5 5

4 5 1 6 5

6 8 1 7 5

8 8 1 9 5

10 6 1 5 5

12 7 1 8 5

13 Which strategy did you use to solve problem 12? Explain why.

Add.

Using Doubles and Doubles Plus 1

Answers will vary. Possible answer: I used the near doubles strategy. I used the double 8 1 8 5 16 and found 1 less to get 7 1 8 5 15.

8 9

12 11

14 15

18 17

10 11

16 15

Teacher Packet

Page 5: Grado 2 Matemáticas...11 8 1 8 5 2 4 1 5 5 4 5 1 6 5 6 8 1 7 5 8 8 1 9 5 10 6 1 5 5 12 7 1 8 5 13 Which strategy did you use to solve problem 12? Explain why. Add. Using Doubles and

© 2020 Curriculum Associates, LLC. All rights reserved. 5©Curriculum Associates, LLC Copying is permitted for classroom use.

Name:

Fluency and Skills Practice

1 12 2 3 5

3 1 5 12

3 11 2 3 5

3 1 5 11

5 12 2 5 10

12 2 4 5

7 16 2 5 10

16 2 9 5

2 14 2 5 5

5 1 5 14

4 15 2 7 5

7 1 5 15

6 13 2 5 10

13 2 6 5

8 15 2 5 10

15 2 9 5

9 In problem 6, how did you use your first answer to find your second answer?

Complete each set of equations.

Counting On and Making a Ten to Subtract

Answers will vary. Possible answer: 13 2 3 5 10. So, to find 13 2 6, I needed to subtract 3 more from 10, and 3 less than 10 is 7.

9 9

8

3

5

8

2

6

9 9

8

7

6

8

8

7

Teacher Packet

Page 6: Grado 2 Matemáticas...11 8 1 8 5 2 4 1 5 5 4 5 1 6 5 6 8 1 7 5 8 8 1 9 5 10 6 1 5 5 12 7 1 8 5 13 Which strategy did you use to solve problem 12? Explain why. Add. Using Doubles and

© 2020 Curriculum Associates, LLC. All rights reserved. 6©Curriculum Associates, LLC Copying is permitted for classroom use.

Name:

Fluency and Skills Practice

1 Hailey buys 9 potatoes. 4 potatoes are white. The rest are red. How many red potatoes are there? Show your work.

Solution potatoes are red.

2 Levi has 17 pet fish. 7 of the fish are goldfish. The rest are mollies. How many fish are mollies? Show your work.

Solution fish are mollies.

3 Ada wants to read 12 books over the summer. 5 books are stories about cats. The rest are stories about horses. How many books are stories about horses? Show your work.

Solution books are stories about horses.

4 There are 16 chairs at a table. 7 students sit down. The rest of the chairs are empty. How many chairs are empty? Show your work.

Solution chairs are empty.

Solve problems 1–6.

Solving Take-Apart Word Problems

Student work will vary.

Student work will vary.

Student work will vary.

Student work will vary.

5

10

7

9

Teacher Packet

Page 7: Grado 2 Matemáticas...11 8 1 8 5 2 4 1 5 5 4 5 1 6 5 6 8 1 7 5 8 8 1 9 5 10 6 1 5 5 12 7 1 8 5 13 Which strategy did you use to solve problem 12? Explain why. Add. Using Doubles and

© 2020 Curriculum Associates, LLC. All rights reserved. 7©Curriculum Associates, LLC Copying is permitted for classroom use.

Name:

Fluency and Skills Practice

Solving Take-Apart Word Problems continued

5 Luis sees 14 dogs at the dog park. 6 of the dogs are small dogs. The rest of the dogs are big dogs. How many dogs are big? Show your work.

Solution dogs are big.

6 Sadie has 20 crayons. She finds 8 crayons in her desk. The rest of the crayons are in her crayon box. How many crayons are in Sadie’s crayon box? Show your work.

Solution crayons are in the crayon box.

7 Which strategy did you use to solve problem 6? Explain why.

Student work will vary.

Answers will vary.

Student work will vary.

12

8

Teacher Packet

Page 8: Grado 2 Matemáticas...11 8 1 8 5 2 4 1 5 5 4 5 1 6 5 6 8 1 7 5 8 8 1 9 5 10 6 1 5 5 12 7 1 8 5 13 Which strategy did you use to solve problem 12? Explain why. Add. Using Doubles and

© 2020 Curriculum Associates, LLC. All rights reserved. 8©Curriculum Associates, LLC Copying is permitted for classroom use.

Name:

Fluency and Skills Practice

1 There are 4 fewer cats than dogs. There are 2 cats. How many dogs are there?

dogs

3 Anna has 7 baskets and some flowers. She has 5 fewer baskets than flowers. How many flowers does Anna have?

Anna has flowers.

5 There are 9 apples. There are 6 fewer apples than oranges. How many oranges are there?

oranges

2 Trevor sees 8 red birds. He sees 5 more red birds than blue birds. How many blue birds does Trevor see?

Trevor sees blue birds.

4 There are 14 coats and some hats. There are 6 more coats than hats. How many hats are there?

hats

6 Brynne has 13 books. She has 8 more books than games. How many games does Brynne have?

Brynne has games.

Solve problems 1–6. Show your work.

Solving Comparison Word Problems

6

12

15 5

3

8

Teacher Packet

Page 9: Grado 2 Matemáticas...11 8 1 8 5 2 4 1 5 5 4 5 1 6 5 6 8 1 7 5 8 8 1 9 5 10 6 1 5 5 12 7 1 8 5 13 Which strategy did you use to solve problem 12? Explain why. Add. Using Doubles and

© 2020 Curriculum Associates, LLC. All rights reserved. 9©Curriculum Associates, LLC Copying is permitted for classroom use.

Name:

Fluency and Skills Practice

1 Jack has 9 flowers to plant. He plants 2 flowers before lunch. Then he plants 3 more after lunch. How many flowers does Jack have left to plant?

Jack has flowers left to plant.

3 Bella paints 6 pictures on Monday and 8 pictures on Wednesday. Then she paints 3 more pictures on Friday. How many pictures does Bella paint this week?

Bella paints pictures this week.

5 Lucas has 5 crayons. His sister gives him 6 more. Then he gives 4 to a friend. How many crayons does Lucas have now?

Lucas has crayons.

2 There are 8 girls at the park. First, 5 girls go home. Then 6 more girls come to the park. How many girls are at the park now?

There are girls at the park.

4 Ali puts 12 books in a box. She takes 4 books out of the box. Then she puts 6 books in the box. How many books are in the box now?

There are books in the box.

6 Miss Brady puts 15 pencils in her desk. Then she takes out 9 pencils. After school she puts 5 pencils back in her desk. How many pencils are in Miss Brady’s desk now?

There are pencils in the desk.

Solve problems 1–6. Show your work.

Ways to Solve Two-Step Problems

4 9

14

11

17

7

Teacher Packet

Page 10: Grado 2 Matemáticas...11 8 1 8 5 2 4 1 5 5 4 5 1 6 5 6 8 1 7 5 8 8 1 9 5 10 6 1 5 5 12 7 1 8 5 13 Which strategy did you use to solve problem 12? Explain why. Add. Using Doubles and

© 2020 Curriculum Associates, LLC. All rights reserved. 10©Curriculum Associates, LLC Copying is permitted for classroom use.

Name:

Fluency and Skills Practice

1 Tony has 37 building blocks. Then he buys more blocks. Now he has 51 blocks. How many blocks does Tony buy?

Tony buys blocks.

3 Jen has some buttons. She gets 23 more buttons from her mom. Now she has 65 buttons. How many buttons did Jen have to begin with?

Jen had buttons to begin with.

5 Ayanna reads 26 pages of her book at school. Later she reads more pages at home. Now she has read 54 pages. How many pages does Ayanna read at home?

Ayanna reads pages at home.

2 There are some chairs in the art room. Mrs. Lopez brings in 16 more chairs. Now there are 42 chairs. How many chairs were in the room at the start?

There were chairs in the room at the start.

4 Colby packs 31 boxes in one day. He packs 12 boxes in the morning and some boxes after lunch. How many boxes does Colby pack after lunch?

Colby packs boxes after lunch.

6 The camp has some tents. Campers set up 42 more tents. Now the camp has 60 tents. How many tents did the camp have to begin with?

The camp had tents to begin with.

Solve problems 1–6. Show your work.

Ways to Model Word Problems

14 26

42 19

28 18

Teacher Packet

Page 11: Grado 2 Matemáticas...11 8 1 8 5 2 4 1 5 5 4 5 1 6 5 6 8 1 7 5 8 8 1 9 5 10 6 1 5 5 12 7 1 8 5 13 Which strategy did you use to solve problem 12? Explain why. Add. Using Doubles and

© 2020 Curriculum Associates, LLC. All rights reserved. 11

©Curriculum Associates, LLC Copying is permitted for classroom use.

Name:

Fluency and Skills Practice

1 30 1 7 1 50 1 3 5

3 20 1 8 1 40 1 2 5

5 60 1 6 1 10 1 4 5

7 40 1 5 1 40 1 5 5

9 30 1 9 1 20 1 1 5

11 20 1 4 1 60 1 6 5

13 40 1 3 1 30 1 7 5

2 37 1 53 5

4 28 1 42 5

6 66 1 14 5

8 45 1 5 90

10 1 21 5 60

12 24 1 5 90

14 1 37 5 80

15 How does the information in problem 9 help you solve problem 10?

Find the sums and missing addends.

Different Ways to Show Addition

90

Answers may vary. Sample answer: I know the sums of problems 9 and 10 are 60. problem 10 has the addend 21 as does problem 9 (20 1 1), so I know that by adding the first two addends of Problem 9, I will get the missing addend in problem 10.

90

70

80

90

60

90

80

70

80

45

39

66

43

Teacher Packet

Page 12: Grado 2 Matemáticas...11 8 1 8 5 2 4 1 5 5 4 5 1 6 5 6 8 1 7 5 8 8 1 9 5 10 6 1 5 5 12 7 1 8 5 13 Which strategy did you use to solve problem 12? Explain why. Add. Using Doubles and

© 2020 Curriculum Associates, LLC. All rights reserved. 12©Curriculum Associates, LLC Copying is permitted for classroom use.

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Fluency and Skills Practice

1 50 2 29 5 ?

5

5

5

50 2 29 5

3 80 2 41 5 ?

1 5

1 5

1 5

80 2 41 5

5 43 2 28 5 ?

1 5

1 5

1 5

1 1 5

43 2 28 5

2 71 2 45 5 ?

1 5

1 5

1 5

1 1 5

71 2 45 5

4 63 2 28 5 ?

1 5

1 5

1 5

1 1 5

63 2 28 5

6 95 2 65 5 ?

1 5

95 2 65 5

Subtract.

Subtracting by Adding Up

49

50

21

21

29 1 20

49 1 1

20 1 1

Possible solutions:

28 30 58

58 2 60

60 3 63

30 2 3 35

35

65 30

30

95

2050

170

205

545 50

70

71

1 26

26

41 30 71

71 9 80

30 9 39

39

28 2 30

30 10 40

40 3 43

2 10 3 15

15

Teacher Packet

Page 13: Grado 2 Matemáticas...11 8 1 8 5 2 4 1 5 5 4 5 1 6 5 6 8 1 7 5 8 8 1 9 5 10 6 1 5 5 12 7 1 8 5 13 Which strategy did you use to solve problem 12? Explain why. Add. Using Doubles and

© 2020 Curriculum Associates, LLC. All rights reserved. 13©Curriculum Associates, LLC Copying is permitted for classroom use.

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Fluency and Skills Practice

Subtracting by Adding Up continued

13 How did you decide what to add first? Then how did you get the answer?

7 65 2 39 5 ?

1 5

1 5

1 5

1 1 5

65 2 39 5

9 75 2 28 5 ?

1 5

1 5

1 5

1 1 5

75 2 28 5

8 47 2 15 5 ?

1 5

1 5

1 5

1 1 5

47 2 15 5

10 54 2 12 5 ?

1 5

1 5

1 5

1 1 5

54 2 12 5

Answers will vary. Possible answer: I either added enough to get up to the next tens number or I added a number of tens to the first number. Then I kept adding more until I reached the number I was subtracting from. I combined all the parts I added to get the difference.

39

28 40 68 12 8 20

15 5 2020

59

68 2 70 20 30 50

20 20 401

60

70 5 75 50 4 54

40 7 475

20

40 2 5 30 8 4 42

42

47

47

5 20 7 32

32

1

59

60

65

5 26

26

Teacher Packet

Page 14: Grado 2 Matemáticas...11 8 1 8 5 2 4 1 5 5 4 5 1 6 5 6 8 1 7 5 8 8 1 9 5 10 6 1 5 5 12 7 1 8 5 13 Which strategy did you use to solve problem 12? Explain why. Add. Using Doubles and

© 2020 Curriculum Associates, LLC. All rights reserved. 14©Curriculum Associates, LLC Copying is permitted for classroom use.

Name:

Fluency and Skills Practice

1 32 2 16

5 76 2 26

9 42 2 25

13 86 2 19

2 48 2 15

6 82 2 37

10 96 2 40

14 59 2 33

3 57 2 25

7 38 2 28

11 92 2 56

15 77 2 48

4 63 2 39

8 53 2 44

12 65 2 23

16 62 2 27

Circle all the problems where you can regroup a ten to help subtract. Then solve the circled problems.

Subtracting by Regrouping

17 How did you know which problems to circle?

18 Check one of your answers by solving it using a different strategy. Show your work.

16

Answers will vary.Possible answer: I look at the ones place. If the digit in the ones place in the top number is less than the digit in the ones place in the bottom number, I need to regroup a ten.

Answers will vary.

24

9

352967

17

45

36

Teacher Packet

Page 15: Grado 2 Matemáticas...11 8 1 8 5 2 4 1 5 5 4 5 1 6 5 6 8 1 7 5 8 8 1 9 5 10 6 1 5 5 12 7 1 8 5 13 Which strategy did you use to solve problem 12? Explain why. Add. Using Doubles and

© 2020 Curriculum Associates, LLC. All rights reserved. 15©Curriculum Associates, LLC Copying is permitted for classroom use.

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Fluency and Skills Practice

1 35 1 5 45

35 1 5 55

35 1 5 60

3 42 1 5 52

42 1 5 82

42 1 5 87

5 26 1 5 36

26 1 5 66

26 1 5 69

7 39 1 5 40

39 1 5 70

39 1 5 75

9 44 1 5 54

44 1 5 64

44 1 5 67

2 24 1 5 34

24 1 5 64

24 1 5 68

4 51 1 5 61

51 1 5 71

51 1 5 76

6 58 1 5 60

58 1 5 70

58 1 5 71

8 27 1 5 30

27 1 5 60

27 1 5 65

10 69 1 5 70

69 1 5 90

69 1 5 93

Solve.

Strategies to Find a Missing Addend

10

20

25

10

1010

210

31

110

40

2040

1240

3331

2120

44

2545

1343

3836

2423

Teacher Packet

Page 16: Grado 2 Matemáticas...11 8 1 8 5 2 4 1 5 5 4 5 1 6 5 6 8 1 7 5 8 8 1 9 5 10 6 1 5 5 12 7 1 8 5 13 Which strategy did you use to solve problem 12? Explain why. Add. Using Doubles and

© 2020 Curriculum Associates, LLC. All rights reserved. 16©Curriculum Associates, LLC Copying is permitted for classroom use.

Name:

Fluency and Skills Practice

11 33 1 5 43

33 1 5 73

33 1 5 76

13 26 1 5 70

32 1 5 61

49 1 5 95

15 62 1 5 85

41 1 5 96

53 1 5 77

12 48 1 5 50

48 1 5 80

48 1 5 85

14 57 1 5 83

34 1 5 67

28 1 5 53

16 19 1 5 75

43 1 5 87

68 1 5 99

Strategies to Find a Missing Addend continued

17 Explain how the strategy to solve problem 5 is different from the strategy used to solve problem 6.

18 Explain the strategy you used to solve the first part of problem 14.

Answers may vary. Possible answer: To solve problem 5, I first added tens then added on the ones. To solve problem 6, I first added ones to the nearest ten then added tens.

Answers may vary. Possible answer: First I added 3 to 57 to get to the nearest ten, 60. Then I added 20 to 60 which equals 80. Finally, I added 3 to get to 83. So 3 1 20 1 3 5 26.

210

2644

5623

3240

3329

4455

3743

2546

3124

Teacher Packet

Page 17: Grado 2 Matemáticas...11 8 1 8 5 2 4 1 5 5 4 5 1 6 5 6 8 1 7 5 8 8 1 9 5 10 6 1 5 5 12 7 1 8 5 13 Which strategy did you use to solve problem 12? Explain why. Add. Using Doubles and

© 2020 Curriculum Associates, LLC. All rights reserved. 17©Curriculum Associates, LLC Copying is permitted for classroom use.

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Fluency and Skills Practice

1 300 1 50 1 1 5

3 400 1 20 1 6 5

5 600 1 40 1 2 5

7 3 hundreds 1 7 tens 1 5 ones 5

9 200 1 8 5

11 600 1 70 1 1 5

13 400 1 70 1 6 5

15 3 hundreds 1 2 tens 1 3 ones 5

2 2 hundreds 1 6 tens 1 7 ones 5

4 400 1 60 1 2 5

6 5 hundreds 1 1 ten 1 3 ones 5

8 500 1 20 1 6 5

10 2 hundreds 1 8 tens 1 0 ones 5

12 6 hundreds 1 0 tens 1 7 ones 5

14 2 hundreds 1 3 tens 1 3 ones 5

16 3 hundreds 1 3 tens 1 2 ones 5

The answers are mixed up at the bottom of the page. Cross out the answers as you complete the problems.

Answers:

233

426

332

607

513

375

476

526

280

323

208

351

267

642

671

462

Finding the Value of Three-Digit Numbers

351267

513

280

607

233

332

462

526

426

642

375

323

208

671

476

Teacher Packet

Page 18: Grado 2 Matemáticas...11 8 1 8 5 2 4 1 5 5 4 5 1 6 5 6 8 1 7 5 8 8 1 9 5 10 6 1 5 5 12 7 1 8 5 13 Which strategy did you use to solve problem 12? Explain why. Add. Using Doubles and

© 2020 Curriculum Associates, LLC. All rights reserved. 18©Curriculum Associates, LLC Copying is permitted for classroom use.

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Fluency and Skills Practice

1 one hundred sixty-four

2 six hundred fifty-two

3 three hundred twelve

4 two hundred sixty-one

5 two hundred five

6 five hundred nineteen

Write the number using only digits.

Writing Three-Digit Numbers

Write the number using only digits.

7 100 1 10 1 6

8 500 1 4

9 300 1 40 1 5

10 300 1 50 1 4

11 400 1 60

12 500 1 40

164

116

312

345

652

504

261

354

205

460

519

540

Teacher Packet

Page 19: Grado 2 Matemáticas...11 8 1 8 5 2 4 1 5 5 4 5 1 6 5 6 8 1 7 5 8 8 1 9 5 10 6 1 5 5 12 7 1 8 5 13 Which strategy did you use to solve problem 12? Explain why. Add. Using Doubles and

© 2020 Curriculum Associates, LLC. All rights reserved. 19©Curriculum Associates, LLC Copying is permitted for classroom use.

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Fluency and Skills Practice

Writing Three-Digit Numbers continued

Write the number as a sum of hundreds, tens, and ones. Then write the number using words.

13 522 1 1

14 435 1 1

15 218 1 1

16 310 1

17 Explain how problem 8 is the same and different from problem 12. Answers will vary. Possible answer: Both 504 and 540 have 5 hundreds, but 504 has 0 tens and 4 ones and 540 has 4 tens and 0 ones.

500 20

300 10

2

five hundred twenty-two

two hundred eighteen

three hundred ten

four hundred thirty-five

400 30 5

200 10 8

Teacher Packet

Page 20: Grado 2 Matemáticas...11 8 1 8 5 2 4 1 5 5 4 5 1 6 5 6 8 1 7 5 8 8 1 9 5 10 6 1 5 5 12 7 1 8 5 13 Which strategy did you use to solve problem 12? Explain why. Add. Using Doubles and

© 2020 Curriculum Associates, LLC. All rights reserved. 20©Curriculum Associates, LLC Copying is permitted for classroom use.

Name:

Fluency and Skills Practice

Compare the numbers in each problem two different ways.

1 Compare 250 and 200.

, and .

3 Compare 346 and 325.

, and .

5 Compare 424 and 453.

, and .

7 Compare 637 and 682.

, and .

9 Compare 531 and 513.

, and .

11 Compare 468 and 486.

, and .

2 Compare 170 and 180.

, and .

4 Compare 235 and 261.

, and .

6 Compare 833 and 824.

, and .

8 Compare 362 and 326.

, and .

10 Compare 714 and 741.

, and .

12 Compare 967 and 959.

, and .

13 What strategies did you use to compare the numbers?

Ways to Compare Three-Digit Numbers

200250 200

250 170180 170

180

325346

346325

235261

261235

424453

453424

824833

833824

637682

682637

326362

362326

513531

531513

714741

741714

468486

486468

959967

967959

Answers will vary.

Teacher Packet

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1 635 1 321

4 825 1 166

7 772 1 109

10 225 1 224

13 273 1 211

2 439 1 154

5 512 1 336

8 347 1 314

11 548 1 406

14 728 1 253

3 336 1 123

6 246 1 348

9 483 1 208

12 475 1 515

15 627 1 263

The answers are mixed up at the bottom of the page. Cross out the answers as you complete the problems.

Adding and Regrouping Ones

Answers:

449

484

954

594

661

848

881

890

990

956

991

459

691

593

981

956 593 459

991 848 594

881 661 691

449 954 990

484 981 890

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1 435 1 283

4 378 1 343

7 152 1 169

10 481 1 262

13 286 1 644

2 205 1 113

5 186 1 175

8 214 1 225

11 145 1 239

14 267 1 174

3 586 1 130

6 476 1 234

9 362 1 556

12 347 1 133

15 383 1 319

Look at the hundreds digits in each problem. Circle those that will have a sum greater than 500. Then find the exact sums of only the problems you circled.

Adding and Regrouping Tens

16 How do you know that 361 1 283 is greater than 500 without finding the sum?

718 716

721 710

918

743

930 702

Answers will vary. Possible answer: I know the sum will be greater than 500 because I can see that three hundreds plus two hundreds is already five hundreds. The sum of the tens and ones will make the total sum greater than 500.

Teacher Packet

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1 875 2 646

4 345 2 224

7 953 2 821

10 663 2 425

13 736 2 517

2 478 2 226

5 761 2 338

8 474 2 156

11 619 2 308

14 563 2 249

3 692 2 437

6 514 2 402

9 320 2 210

12 847 2 628

15 375 2 163

Circle all the problems where you must regroup a ten to subtract the ones. Then find the differences of only the problems you circled.

Regrouping Tens to Ones

16 How can you tell by looking at the problem if you need to regroup a ten to subtract the ones?

229 255

318

423

314

238

219

219

Answers will vary. Possible answer: When I look at the ones place, if the ones digit in the top number is less than the ones digit in the bottom number, then I will need to regroup.

Teacher Packet

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1 816 2 432

4 448 2 160

7 628 2 236

10 347 2 154

13 329 2 170

2 927 2 563

5 743 2 471

8 961 2 470

11 835 2 285

14 465 2 195

3 506 2 315

6 476 2 293

9 527 2 256

12 624 2 382

15 519 2 378

The answers are mixed up at the bottom of the page. Cross out the answers as you complete the problems.

Regrouping Hundreds to Tens

Answers:

193

364

183

242

271

141

191

491

550

384

288

159

272

392

270

384 364 191

288 272 183

392 491 271

193 550 242

159 270 141

Teacher Packet

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Fluency and Skills Practice

Adding Four Two-Digit Numbers

1 29 1 34 1 21 1 36

50 1 70

3 17 1 36 1 43 1 74

5 32 1 24 1 68 1 46

7 32 1 13 1 29 1 35

9 24 1 12 1 74 1 68

2 45 1 38 1 62 1 15

4 55 1 49 1 71 1 15

6 27 1 19 1 33 1 81

8 53 1 74 1 13 1 44

10 92 1 37 1 71 1 14

11 Explain how you found the answer to problem 8.

Find the sum. Show your work.

160

190

184

160

214

170

109

170

178

120

Answers will vary. Possible answer: I broke each number into tens and ones. Then I added the ones: 3 1 4 1 3 1 4 5 14. Next, I added the tens: 50 1 70 1 10 1 40 5 170. Finally, I added 170 1 14 to get 184.

Teacher Packet

Page 26: Grado 2 Matemáticas...11 8 1 8 5 2 4 1 5 5 4 5 1 6 5 6 8 1 7 5 8 8 1 9 5 10 6 1 5 5 12 7 1 8 5 13 Which strategy did you use to solve problem 12? Explain why. Add. Using Doubles and

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Fluency and Skills Practice

1 Use a ruler to measure the length of the piece of tape in inches.

What is the length of the tape? inches

2 Use a ruler to measure the length of the pencil in inches.

What is the length of the pencil? inches

3 Use a ruler to measure the length of the shoe in centimeters.

What is the length of the shoe? centimeters

4 Use a ruler to measure the length of the fish in centimeters.

What is the length of the fish? centimeters

Measuring in Inches and Centimeters

3

5

6

8

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Measuring in Inches and Centimeters continued

5 Use a ruler to measure the length of the string in both inches and centimeters.

What is the length of the string in inches? inches

What is the length of the string in centimeters? centimeters

6 Use a ruler to measure the length of the rectangle in both inches and centimeters.

What is the length of the rectangle in inches? inches

What is the length of the rectangle in centimeters? centimeters

7 For problem 6, did you write different numbers for the length in inches and the length in centimeters? Explain.

2

5

4

10

Yes. Answers will vary. Possible answer: The length of the rectangle is 4 inches and 10 centimeters long. Centimeters are smaller units than inches, so when you measure something in inches and centimeters, there are more centimeters than inches.

Teacher Packet

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Fluency and Skills Practice

1 Circle the objects that are easier to measure with an inch ruler.

Underline the objects that are easier to measure with a yardstick.

a bike a leaf a table

a book a sticker

2 Circle the objects that are easier to measure with an inch ruler.

Underline the objects that are easier to measure with a yardstick.

a window a cracker a tent

a marker a blanket

3 What is the length of the rectangle to the nearest inch?

inches0 1 2 3 4 5 6

The rectangle is about inches long.

Measuring in Inches and Feet

3

Teacher Packet

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4 What is the length of the baseball bat to the nearest foot?

1 2 3 4 5 6 7 8 9 10 11 12

1 ft 2 ft 3 ft0 13 14 15

Inches YARDSTICK16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36

1 2 3 4 5 6 7 8 9 10 11 120inches

1 2 3 4 5 6 7 8 9 10 11 120inches

1 2 3 4 5 6 7 8 9 10 11 120inches

33 3432 3 ft16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36

1 2 3 4 5 6 7 8 9 10 11 12

16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 3616 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 3616 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 3616 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 3633 3432

The baseball bat is about feet long.

5 What is the length of the branch to the nearest foot?

1 ft 2 ft

The branch is about foot long.

Measuring in Inches and Feet continued

2

1

Teacher Packet

Page 30: Grado 2 Matemáticas...11 8 1 8 5 2 4 1 5 5 4 5 1 6 5 6 8 1 7 5 8 8 1 9 5 10 6 1 5 5 12 7 1 8 5 13 Which strategy did you use to solve problem 12? Explain why. Add. Using Doubles and

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Fluency and Skills Practice

1 Circle the objects that are easier to measure with a centimeter ruler.

Underline the objects that are easier to measure with a meter stick.

a rug a mitten a pool

a bee a shell

2 Circle the objects that are easier to measure with a centimeter ruler.

Underline the objects that are easier to measure with a meter stick.

a porch a spoon

a watch a bus a lunch bag

3 What is the length of the tape to the nearest centimeter?

centimeters

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18

The tape is about centimeters long.

Measuring in Centimeters and Meters

7

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4 What is the length of the bench to the nearest meter?

62 64 66 68 70 72 74 76 78 802 4 6 8 10 12 14 16 18 20 22 240 26 28 30centimeters

32 34 36 38 40 42 44 46 48 50 52 54 56 58 60 63 65 67 69 71 73 75 77 79 82 84 86 88 9081 83 85 87 89 92 94 96 98 10091 93 95 97 993 5 7 9 11 13 15 17 19 21 23 251 27 29 31 33 35 37 39 41 43 45 47 49 51 53 55 57 59 61

97 999896 10082 84 86 88 9081 83 85 87 8982 84 86 88 9081 83 85 87 8982 84 86 88 9081 83 85 87 8981 83 85 87 8982 84 86 88 9081 83 85 87 8982 84 86 88 9081 83 85 87 8982 84 86 88 90 97 999896 97 999896 97 999896 100

The bench is about meter long.

5 What is the length of the rectangle to the nearest centimeter?

62 64 66 68 70 72 74 76 782 4 6 8 10 12 14 16 18 20 22 240 26 28 30centimeters

32 34 36 38 40 42 44 46 48 50 52 54 56 58 60 63 65 67 69 71 73 75 773 5 7 9 11 13 15 17 19 21 23 251 27 29 31 33 35 37 39 41 43 45 47 49 51 53 55 57 59 61

71 737270 7462 64 66 68 70 72 74 76 7863 65 67 69 71 73 75 7762 64 66 68 70 72 74 76 7863 65 67 69 71 73 75 7762 64 66 68 70 72 74 76 7863 65 67 69 71 73 75 7762 64 66 68 70 72 74 76 7863 65 67 69 71 73 75 7762 64 66 68 70 72 74 76 7863 65 67 69 71 73 75 7762 64 66 68 70 72 74 76 7863 65 67 69 71 73 75 7762 64 66 68 70 72 74 76 7863 65 67 69 71 73 75 7762 64 66 68 70 72 74 76 78

71 737270 71 737270 71 737270 7471 737270 71 737270 71 73

The rectangle is about centimeters long.

Measuring in Centimeters and Meters continued

1

71

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