Grade 3 Math: Estimating Sums & Differences in Word Problems

Lily has 25 apples. She gives 8 apples to her friend. How many apples does she have left? Estimate the difference and check if your answer makes sense.

• 15

• 17

• 20

• 10

Tom has 40 marbles. He buys 15 more marbles. How many marbles does he have now? Estimate the sum and check if your answer is reasonable.

• 60

• 45

• 55

• 50

A farmer has 50 chickens. He sells 12 chickens. How many chickens does he have now? Estimate the difference and verify your answer.

• 38

• 30

• 45

• 40

Sarah read 30 pages of her book. Then she read 15 more pages. How many pages did she read in total? Estimate the sum and check if your answer is reasonable.

• 45 pages

• 50 pages

• 25 pages

• 40 pages

In a class, there are 28 students. If 10 students are absent, how many students are present? Estimate the difference and check if your answer makes sense.

• 22

• 20

• 16

• 18

A toy store had 60 toys. They sold 25 toys. How many toys are left in the store? Estimate the difference and verify your answer.

• 40

• 35

• 30

• 25

Mark has 15 stickers. He finds 9 more stickers. How many stickers does he have now? Estimate the sum and check if your answer is reasonable.

• 18

• 20

• 30

• 24

Emma has 45 candies. She gives 20 candies to her friends. How many candies does she have left? Estimate the difference and check if your answer makes sense.

• 15

• 30

• 40

• 25

There are 70 books in the library. If 18 books are checked out, how many books are still in the library? Estimate the difference and verify your answer.

• 60

• 48

• 30

• 52

A baker made 100 cookies. He sold 37 cookies. How many cookies does he have left? Estimate the difference and check if your answer is reasonable.

• 75

• 50

• 40

• 63