Mastering Integer Addition & Subtraction with Estimation

Lily has 15 apples. She gives 7 apples to her friend. How many apples does Lily have left?

• 12

• 10

• 8

• 6

Tom has 20 marbles. He finds 5 more marbles. How many marbles does Tom have now?

• 10

• 30

• 25

• 15

A farmer has 30 chickens. 12 chickens are sold. How many chickens does the farmer have now?

• 18

• 25

• 15

• 20

Sarah read 25 pages of her book. She plans to read 10 more pages. How many pages will she have read in total?

• 35

• 40

• 20

• 30

In a class, there are 18 boys and 22 girls. If 5 boys leave the class, how many students are left?

• 30

• 35

• 34

• 36

A toy store had 50 toys. They sold 18 toys. How many toys are still in the store?

• 40

• 35

• 32

• 28

Mark has 40 stickers. He gives 15 stickers to his sister. How many stickers does Mark have now?

• 25

• 30

• 20

• 35

Emma collected 35 seashells. She found 10 more seashells at the beach. How many seashells does she have in total?

• 30

• 45

• 40

• 50

There are 60 students in a school. If 25 students go home early, how many students are still at school?

• 35

• 30

• 50

• 40

A baker made 45 cookies. He sold 20 cookies. How many cookies does he have left?

• 30

• 20

• 25

• 15