Solve Word Problems Using Variables and Equations

1. Sarah has x apples. If she buys 5 more apples, she will have 12 apples. What equation represents this situation?

• x + 12 = 5

• x + 5 = 12

• x - 5 = 12

• x + 5 = 10

Tags

CCSS.HSA.CED.A.3

2. A book costs $x. If you buy 3 books and spend $30, what equation can you use to find the cost of one book?

• x = 10

• 2x = 30

• 3x + 10 = 30

• 3x = 30

Tags

CCSS.HSA.CED.A.3

3. Tom has y marbles. He gives 4 marbles to his friend and now has 10 marbles left. What equation can be used to find the number of marbles Tom had originally?

• y = 14

• y + 4 = 10

• y - 4 = 10

• y - 10 = 4

Tags

CCSS.HSA.CED.A.3

4. A box can hold x toys. If you have 3 boxes and they can hold a total of 45 toys, what equation can you use to find how many toys fit in one box?

• x + 3 = 45

• x - 3 = 45

• 3 * x = 45

• 3 * x = 15

Tags

CCSS.HSA.CED.A.3

5. Lisa is x years old. In 5 years, she will be 15 years old. What equation can you use to find Lisa's current age?

• x - 5 = 10

• x - 5 = 5

• x + 10 = 15

• x + 5 = 15

6. A car travels x miles in 1 hour. If it travels for 3 hours and covers 120 miles, what equation can you use to find the speed of the car?

• x = 40

• 2x = 120

• x + 120 = 3

• 3x = 120

Tags

CCSS.HSA.CED.A.3

7. A pizza has x slices. If you eat 2 slices and have 6 slices left, what equation represents the number of slices in the pizza?

• x - 2 = 6

• x + 2 = 6

• x - 6 = 2

• x = 8

Tags

CCSS.HSA.CED.A.3

8. A farmer has y chickens. If he buys 10 more chickens and now has 50 chickens, what equation can you use to find how many chickens he had before?

• y + 10 = 40

• y - 10 = 50

• y + 10 = 50

• y + 20 = 50

Tags

CCSS.HSA.CED.A.3

9. A school has x students. If 20 more students enroll and the total becomes 200, what equation can you use to find the original number of students?

• x + 200 = 20

• x + 20 = 200

• x + 20 = 180

• x - 20 = 200

Tags

CCSS.HSA.CED.A.3

10. A toy costs $x. If you buy 4 toys and spend $40, what equation can you use to find the price of one toy?

• x + 4 = 40

• x = 10

• 4x + 10 = 40

• 4x = 40

Tags

CCSS.HSA.CED.A.3