Mastering Addition & Subtraction: Estimating Sums & Differences

Lily has 45 apples. She gives 12 apples to her friend. How many apples does she have left?

• 25

• 50

• 33

• 40

Tom has 32 marbles. He finds 18 more marbles. How many marbles does Tom have now?

• 60

• 40

• 45

• 50

A bakery made 150 cookies. They sold 67 cookies in the morning. How many cookies are left?

• 100

• 75

• 83

• 90

Sarah read 25 pages of her book on Monday and 37 pages on Tuesday. How many pages did she read in total?

• 50

• 62

• 70

• 55

There are 120 students in a school. If 45 students are in the art class, how many students are not in the art class?

• 100

• 90

• 60

• 75

A farmer has 200 carrots. He sells 75 carrots at the market. How many carrots does he have remaining?

• 150

• 200

• 100

• 125

In a toy store, there are 85 teddy bears. If 29 teddy bears are sold, how many teddy bears are still in the store?

• 57

• 50

• 60

• 56

A library has 300 books. If 150 books are checked out, how many books are still in the library?

• 200

• 150

• 250

• 100

Emma has 56 stickers. She buys 24 more stickers. How many stickers does she have now?

• 70

• 100

• 80

• 90

A zoo has 90 animals. If 15 animals are added, how many animals are there in total?

• 100

• 105

• 90

• 120