expressions objective: students will write numerical and algebraic expressions

26
Expressions Objective: Students will write numerical and algebraic expressions.

Upload: ferdinand-chambers

Post on 05-Jan-2016

225 views

Category:

Documents


1 download

TRANSCRIPT

Page 1: Expressions Objective: Students will write numerical and algebraic expressions

ExpressionsObjective: Students will write

numerical and algebraic expressions.

Page 2: Expressions Objective: Students will write numerical and algebraic expressions

Vocabulary Review

• Variable• Expression• Equation• Evaluate

• n + 7 = 10• c t s n• r – 3, for r =

5• 8p

Page 3: Expressions Objective: Students will write numerical and algebraic expressions

Operation Verbal Expressions

• add • plus • sum

• more than • increased by

• subtract • minus • difference • less than • decreased by • take away • less

OperationVerbal

Expressions

÷

• times• multiplied by• product

• divided into• divided by• quotient

• each

• each

• more than

Page 4: Expressions Objective: Students will write numerical and algebraic expressions

Warm Up: On your whiteboard, write a numerical expression.

• 5 more than 33 + 5

• 3 less than 55 - 3

• the product of 6 and 76 x 7

• the quotient of 12 and 312 ÷ 3

Page 5: Expressions Objective: Students will write numerical and algebraic expressions

I Do It

Rob and Jennifer both collect basketball cards. Rob has collected 27 cards. Rob has 3 times as many as Jennifer. Write an expression to show the number of cards Jennifer has.Understand

JustifyWrite

Plan

Page 6: Expressions Objective: Students will write numerical and algebraic expressions

We Do It

Fred had 22 colored pencils. He lost some. Write an expression to represent how many pencils Fred has left.

Understand Plan

Write Justify

Page 7: Expressions Objective: Students will write numerical and algebraic expressions

We Do It

Fred had some colored pencils. He lost 22. Write an expression to show how many colored pencils Fred has left.

Understand Plan

Write Justify

Page 8: Expressions Objective: Students will write numerical and algebraic expressions

We Do It

Kenny had many baseball cards. He gave each of his 3 friends 8 cards. Write an expression to show how many cards he has left.

Understand Plan

Write Justify

Page 9: Expressions Objective: Students will write numerical and algebraic expressions

You Do It

When the train stopped, 5 people boarded and two got off. Write an expression that represents how many people are left on the train.

Understand Plan

Write Justify

Page 10: Expressions Objective: Students will write numerical and algebraic expressions

You Do It

Nick had some model airplanes. His sister broke 15. Write an expression that represents how many model airplanes Nick has left.

Page 11: Expressions Objective: Students will write numerical and algebraic expressions

You Do It

Nick had 15 model airplanes. His sister broke some. Write an expression that represents how many model airplanes Nick has left.

Page 12: Expressions Objective: Students will write numerical and algebraic expressions

You Do It

Debbie put her collection of 120 shells equally into boxes. Write an expression that represents how many shells are in each box.

Page 13: Expressions Objective: Students will write numerical and algebraic expressions

You Do It

Susan had 4 boxes and put some books in each box. Write an expression that shows how many books Susan has.

Page 14: Expressions Objective: Students will write numerical and algebraic expressions

Card Activity• Find matches for your expressions.– You should have a word problem, a written

expression, and a mathematical expression in your group.

– Check with your group members to make sure you all agree.

– Be prepared to share with the class.

Page 15: Expressions Objective: Students will write numerical and algebraic expressions

Challenge Question

• Yosemite National Park was created by Congress in 1890. The expression x – 1890 models the current age of the park in years. What does x represent?

Page 16: Expressions Objective: Students will write numerical and algebraic expressions

Begin Grouping Examples

• I had 14 pretzels. I ate some and gave 3 to Mia.

Page 17: Expressions Objective: Students will write numerical and algebraic expressions

• Al planted 16 rose bushes. Then he bought some more.

Page 18: Expressions Objective: Students will write numerical and algebraic expressions

• Alejandro had a cat. It had kittens.

Page 19: Expressions Objective: Students will write numerical and algebraic expressions

• A platypus can stay under water for 10 minutes. If a polar bear can stay under water for 8 minutes less, write an expression to show how long a polar bear can stay under water?

Page 20: Expressions Objective: Students will write numerical and algebraic expressions

• Alice scored 3 goals in each soccer game. There were several soccer games. Write an expression to show how many goals she scored.

Page 21: Expressions Objective: Students will write numerical and algebraic expressions

• Mark has 24 apples. He wants to share them equally among his 4 friends.

Page 22: Expressions Objective: Students will write numerical and algebraic expressions

• Peter walked 12 miles in 3 hours. Write an expression to show how far Peter walked each hour.

Page 23: Expressions Objective: Students will write numerical and algebraic expressions

• Some girls came to the first practice. 12 more came to the second practice.

Page 24: Expressions Objective: Students will write numerical and algebraic expressions

• 359 more than z

Page 25: Expressions Objective: Students will write numerical and algebraic expressions

• The temperature dropped 10 degrees, then went up 4 degrees.

Page 26: Expressions Objective: Students will write numerical and algebraic expressions

• In the past year, Jack doubled his collection of origami paper shapes. He now has a total of 568 origami shapes. Write an expression to show how many origami shapes he had a year ago.