Simple Algebra Expressions

This piece of string is 30 cm long. If Sarah cuts off p cm from one end, what length is left?

• 30 - p

• 30 + p

• 30/p

• 30 - 2p

The sum of seven and x

• 7-x

• x-7

• 7x

• 7+x

The quotient of seven and w

• 7/w

• 7w

• w/7

• w7

There are 150 hi-chews in a bag. Bradley grabs a handful (he didn't steal them). What expressions shows how many hi-chews are left in the bag?

• 150x

• 150-x

• x-150

• x+150

Mr. Soldo spent $26.75 on Dunkin Doughnuts. He was given $13.25 change. What equation shows x representing the amount of money he gave to pay for the doughnuts?

• x+26.75=13.25

• 13.25-x=26.75

• x-26.75=13.25

• 26.75x=13.25

Write an algebraic equation.

Dean ate 11 grapes after dinner, which was 3 more than twice as many grapes as Sara ate.

• 2g + 11 = 3

• 2g + 3 = 11

• 2g - 3 = 11

• 2g - 11 = 3

The product of 7 and j..

• 7j

• j+3

• j-3

• j/3

Find the algebraic expression to describe the pattern.
Eric's age           Mary's age
4                             8
8                           16
3                            6
x                          

• x + 4

• 2x

• x + 2

• x - 4

• 5 plus a number

• the difference of 5 and a number

• 5 more than a number

• the difference of a number and 5

• the product of a number and 12

• the product of 12 and a number

• 12 times a number

• a number times 12