9.5 Write Expressions

What are operations?

(Choose all that apply.)

• addition +

• subtraction -

• multiplication x

• division ÷

An __________ is a number or a combination of numbers and operations (+ - x ÷). It does not have an equals sign (=).

• expression

• equation

Find an expression for each situation.

There were 6 groups of scouts. Each group earned 9 merit badges.

• 6 + 9

• 6 x 9

Find an expression for each situation.

Mr. Lewis bought a flat of flowers for $22. How much change should he receive if he paid with two $20 bills?

• ( $20 + $20 ) - $22

• ( $20 + $20 ) x $22

Find an expression for each situation.

Each package of tape is 9 feet long. When Taryn buys 2 rolls, how many yards of tape will she have?

(Hint: 1 yard = 3 feet)

• ( 2 x 9 ) ÷ 3

• ( 2 x 9 ) x 3

Model each expression with pictures, numbers, and words.

Jeff had 8 crayons. He lost 5 of them.

• 8 - 5

• 8 + 5

• 8 x 5

Model each expression with pictures, numbers, and words.

A carpenter has six nails. She went to the store to buy three more. She used 2 nails.

• 6 x 3 - 2

• 6 + 3 - 2

Find an expression for the phrase.

4 more than 7

• 7 + 4

• 7 x 4

Find an expression for the phrase.

the total of 5 rows of 6 chairs

• 5 + 6

• 5 x 6

Find an expression for the phrase.

half of 18

• 18 ÷ 2

• 18 X 2