2nd Grade Math: Estimating and Using Number Lines

Lily has 27 apples. She gives 15 apples to her friend. How many apples does she have left? Use a number line to help you.

• 20

• 15

• 10

• 12

Tom has 45 marbles. He buys 28 more marbles. How many marbles does he have now? Estimate the total before calculating.

• 80

• 73

• 50

• 65

A farmer has 56 carrots. He sells 29 carrots at the market. How many carrots does he have left? Show your work on a number line.

• 27

• 35

• 30

• 25

Sarah read 34 pages of her book. Then she read 19 more pages. How many pages did she read in total? Estimate first, then find the exact number.

• 55

• 50

• 52

• 53

In a box, there are 63 chocolates. If 27 chocolates are eaten, how many chocolates remain? Use a number line to find the answer.

• 45

• 50

• 27

• 36

A toy store had 78 toys. They sold 45 toys during a sale. How many toys are left in the store? Estimate the difference before solving.

• 50

• 25

• 33

• 40

Ben collected 52 stickers. He gave 18 stickers to his friend. How many stickers does he have now? Use a number line to show your work.

• 34

• 50

• 40

• 30

Emma has 90 balloons. She pops 37 balloons during a party. How many balloons are left? Estimate the number before calculating the exact amount.

• 75

• 60

• 47

• 53

A library has 120 books. If 45 books are checked out, how many books are still in the library? Use a number line to help you find the answer.

• 65

• 80

• 90

• 75

Jack has 75 toy cars. He loses 29 of them. How many toy cars does he have left? Estimate the difference and then calculate the exact number.

• 70

• 46

• 60

• 50