Estimating Sums and Differences: Grade 4 Fun Quiz

A farmer has 47 apples and 36 oranges. Estimate how many fruits he has in total by rounding to the nearest ten.

• 100

• 70

• 80

• 90

Lily has 82 stickers, and she gives 29 to her friend. Estimate how many stickers Lily has left by rounding to the nearest ten.

• 50

• 60

• 40

• 70

A library has 154 books, and 78 of them are fiction. Estimate how many non-fiction books are in the library by rounding to the nearest ten.

• 100

• 80

• 70

• 90

Tom bought 65 marbles, and he lost 28 of them. Estimate how many marbles he has now by rounding to the nearest ten.

• 50

• 70

• 40

• 30

A toy store has 123 toys on the shelf. If 45 toys are sold, estimate how many toys are left by rounding to the nearest ten.

• 100

• 70

• 90

• 80

Sarah read 78 pages of her book, and she plans to read 34 more. Estimate how many pages she will read in total by rounding to the nearest ten.

• 90

• 110

• 100

• 120

A bakery made 215 cookies, and they sold 89 of them. Estimate how many cookies are left by rounding to the nearest ten.

• 130

• 140

• 150

• 120

In a classroom, there are 56 pencils and 29 erasers. Estimate the total number of writing tools by rounding to the nearest ten.

• 80

• 100

• 70

• 90

A gardener planted 134 flowers and plans to plant 47 more. Estimate the total number of flowers by rounding to the nearest ten.

• 180

• 170

• 200

• 150

A pet store has 89 fish and 34 birds. Estimate how many pets are in the store by rounding to the nearest ten.

• 100

• 120

• 150

• 130