Extra Credit: Rounding & Estimation

Name: _______________________________________

Rounding Rule Reminder

"5 or more, raise the score. 4 or less, let it rest."

Section 1: Rounding Whole Numbers

1. Round 87 to the nearest ten.
2. Round 123 to the nearest ten.
3. Round 455 to the nearest hundred.
4. Round 1,892 to the nearest hundred.
5. Round 7,499 to the nearest thousand.
6. Round 12,500 to the nearest thousand.
7. Round 298 to the nearest ten.
8. Round 9,045 to the nearest hundred.
9. Round 99,601 to the nearest thousand.
10. Round 5,432 to the nearest ten.

Section 2: Rounding Decimals

1. Round 5.8 to the nearest whole number.
2. Round 12.3 to the nearest whole number.
3. Round 0.76 to the nearest tenth.
4. Round 4.51 to the nearest tenth.
5. Round 8.128 to the nearest hundredth.
6. Round 0.995 to the nearest hundredth.
7. Round 2.91 to the nearest whole number.
8. Round 15.05 to the nearest tenth.
9. Round 3.14159 to the nearest hundredth.
10. Round 9.96 to the nearest tenth.

Section 3: Estimation

First, round each number to the place value indicated. Then, perform the operation.

1. Est. 48 + 31 (nearest ten).
2. Est. 92 - 27 (nearest ten).
3. Est. 104 + 55 (nearest ten).
4. Est. 76 - 49 (nearest ten).
5. Est. 189 + 225 (nearest hundred).
6. Est. $5.99 + $2.99 (nearest dollar).
7. Est. 41 x 19 (nearest ten).
8. Est. 98 ÷ 11 (nearest ten).

Section 4: Word Problems

1.
A store sold 1,482 toys in one week. Round this number to the nearest hundred.
2.
Your lunch bill is $12.58. Round the bill to the nearest dollar.
3.
You want to buy a video game for $49 and a controller for $28. Estimate the total cost by rounding each price to the nearest ten.
4.
A plane is flying at an altitude of 32,780 feet. Round the altitude to the nearest thousand feet.
5.
A piece of paper is 8.52 inches wide. Round the width to the nearest tenth of an inch.