Solving Math Word Problems: Evaluate Variables in Equations

1. Sarah has x apples. If she buys 5 more apples, how many apples does she have now? Write an equation to represent this situation.

• x - 5

• x + 10

• 5 - x

• x + 5

2. The equation y = 3x + 2 represents the number of books Maria has if she buys x more books. If Maria currently has 4 books, how many will she have after buying x books?

• 4

• 6

• 7

• 5

3. A box contains x toys. If 7 toys are added to the box, how many toys are in the box now? Write an equation to show this.

• 7 - x

• x + 7

• x + 10

• x - 7

4. The equation z = 10 - y shows how many candies are left after y candies are eaten. If 3 candies are eaten, how many candies are left?

• 5

• 10

• 2

• 7

5. If the equation a = 2b + 4 represents the total number of stickers, and b is the number of sticker packs bought, how many stickers does she have if she buys 3 packs?

• 12

• 10

• 8

• 6

6. The equation p = 5 + 2q shows how much money you have if you save q dollars each week. If you save 4 dollars this week, how much money do you have?

• 13

• 10

• 15

• 20

7. If the equation m = 12 - n represents the number of cookies left after n cookies are eaten, how many cookies are left if 5 cookies are eaten?

• 6

• 8

• 10

• 7

8. The equation k = 3j + 1 shows the total number of marbles if j is the number of jars. If you have 2 jars, how many marbles do you have?

• 3

• 10

• 5

• 7

9. If the equation r = 15 + s represents the total number of stamps you have after receiving s stamps, how many stamps do you have if you receive 10 more?

• 25

• 15

• 30

• 20

10. The equation t = 4x - 3 shows the total number of pencils if x is the number of pencil packs. If you have 5 packs, how many pencils do you have?

• 12

• 20

• 15

• 17