Real-Life Integer Addition: Number Sentences & Estimates

Lily has 12 apples. She buys 8 more apples. How many apples does she have now? Write a number sentence to show your work.

• 18

• 20

• 25

• 15

Tom has 15 marbles. He finds 7 more marbles in his bag. How many marbles does Tom have altogether? Estimate the total before calculating.

• 18

• 22

• 20

• 25

A farmer has 20 chickens and buys 10 more. How many chickens does he have in total? Write a number sentence to represent this problem.

• 35

• 30

• 25

• 15

Sarah read 18 pages of her book on Monday and 14 pages on Tuesday. How many pages did she read in total? Estimate the total pages read.

• 40 pages

• 32 pages

• 30 pages

• 25 pages

In a park, there are 25 trees. The city plants 15 more trees. How many trees are there now? Write a number sentence to solve this problem.

• 30

• 35

• 50

• 40

A toy store has 30 toy cars. They receive a shipment of 22 more toy cars. How many toy cars are there in total? Estimate the total before solving.

• 48

• 52

• 60

• 42

Mark has 9 stickers. His friend gives him 6 more stickers. How many stickers does Mark have now? Write a number sentence to show your work.

• 15

• 10

• 12

• 20

Emma has 40 candies. She gives 10 candies to her friend. How many candies does she have left? Write a number sentence to represent this situation.

• 30

• 20

• 10

• 50

A library has 50 books. They buy 25 new books. How many books does the library have now? Estimate the total number of books.

• 50

• 100

• 75

• 30

In a classroom, there are 18 boys and 12 girls. How many students are there in total? Write a number sentence to show your work.

• 28

• 30

• 32

• 25