One Step Addition or Subtraction Word Problem

How many books are in the room?

• 128

• 12

• 16

• 4

What value makes the equation true?

• 9

• 4

• 3

• 12

Last Friday Trevon had $29. Over the weekend he received some money for cleaning the attic. He now has $41. How much money did he receive?

• 29 - n = 41

• 29 - n = 40

• 29 + n = 41

• 29 + n = 40

Lea is making cookies. The recipe calls for 5 cups of sugar. She accidentally put in 9 cups. How many extra cups did she put in? Choose the correct equation.

• x + 5 = 9

• x + 9 = 5

• x - 5 = 9

• x - 9 = 5

The total mass of the contents of Derek’s backpack was 678 grams. Each book has a mass of 162 grams. Derek removed 2 textbooks from his backpack. What is the mass of the contents of the backpack now? What operation do we use to solve?

• add

• subtract

• divide

• subtract then add

Write an equation to represent the situation using x as your variable:

Samantha is selling candy bars for Student Council.  She started with 80 candy bars two weeks ago, and now she only has 20 left.  How many candy bars did Samantha sell?

Mathematical Equivalence

ON

Javier has saved $55 toward the purchase of an IPOD. The IPOD costs $145. Which equation represents the amount Javier needs to save to by the IPOD?

• 55 + x = 145

• 145x = 55

• 55 - x = 145

• 145 (55) = x

Working together, Joy and Steve collected 53 pounds of aluminum cans for recycling. If Joy collected 20 pounds, find the number of pounds, x, that Steve collected. Using x as your variable write an equation to solve.

• 20x=53

• x-20=53

• x-53=20

• x+20=53

Amy went to the store with $10 and came home with $4.65. What is the equation to find out how much money Amy spent at the store?

• x + $4.65 = $10

• $10 + x = $4.65

• x = $4.65 + $10

• $4.65 - x = $10

Danny collected 38 cans at the playground. He then collected 27 cans at the ball field. How many cans did Danny collect in all? What is the equation for this word problem?

• 38 - 27 = x

• 27 + x = 38

• 38 + 27 = x

• 27x = 38