Identifying and Writing Expressions

What is the algebraic expression for:

the product of 8 and a number, m, plus 10

• 8m

• m + 10

• 8m + 10

• 8 + 10

Identify a verbal expression that represents the algebraic expression below:

• 3 added to twice a number, n

• the product of 2 and a number, n

• a number, n plus 3

• the sum of a number, n and 2

Tom's dog weighs 7 pounds more than twice the weight of Kara's dog. If w represents the weight of Kara's dog, what expression below represents the weight of Tom's dog?

• 2w

• w + 7

• 2w + 7

• 7w + 2

Jaimie buys 3 packs of starbursts. Each pack has the same number of starbursts. What expression below would represent the total amount of starbursts Jaimie has? Let s represent pieces of starbursts.

• 3 + s

• 3s

• s - 3

• 3/s

Tracy is 5 inches less than three times as tall as her brother.

A) If b represents her brother's height, write an expression that represents Tracy's height.

B) How tall is Tracy if her brother is 22 inches tall?

• A) b - 5

  
  

  B) 25 inches

• A) 3b - 5

  
  

  B) 81 inches

• A) 3b - 5

  
  

  B) 61 inches

• A) 3b

  
  

  B) 66 inches

What is the algebraic expression for:

a number, k divided by 12

• 12k

• 12 + k

• k - 12

• 4.50as

• 4.50(a +s)

• (3.00a)(1.50s)

• 3.00a + 1.50s

• 23x

• 23 + 250x

• 23x + 250

• 23(x + 250)

• 310 - 8w

• 280 + 30(w - 1)

• 310w - 30

• 280 -30(w - 1)

• 0.25c - 9.96

• 0.50c - 9.71

• 0.50c - 10.21

• 0.75c - 9.96