One-Step Equations: Mastering Inverse Operations

Maria has 15 apples. She gives some apples to her friend and now has 9 apples left. How many apples did she give away?

• 4

• 8

• 10

• 6

A book costs $12. If you have $5, how much more money do you need to buy the book?

• $7

• $3

• $10

• $5

Tom has a collection of 20 baseball cards. He buys some more cards and now has 25. How many cards did he buy?

• 10

• 3

• 5

• 7

A box contains 30 chocolates. If 10 chocolates are eaten, how many chocolates are left in the box?

• 15

• 10

• 20

• 25

Lily scored 18 points in a game. If she scores 5 more points in the next game, what will her total score be?

• 25

• 23

• 20

• 15

A bicycle costs $80. If you save $20, how much more do you need to save to buy the bicycle?

• $40

• $20

• $60

• $100

There are 50 students in a class. If 12 students are absent, how many students are present?

• 38

• 45

• 40

• 36

A gardener planted 25 flowers. If he plants 10 more flowers, how many flowers will he have in total?

• 30

• 35

• 40

• 20

A jar contains 40 candies. If you take out 15 candies, how many candies remain in the jar?

• 25

• 20

• 30

• 35

A movie ticket costs $10. If you have $25, how many tickets can you buy?

• 3

• 4

• 1

• 2