Estimate Sums and Differences

Estimate the difference by rounding to the nearest hundred.

839 - 576

Estimate the difference by rounding to the nearest ten.

737 - 412.

Estimate the difference by rounding to the nearest ten.

944 - 418

Mrs. Green's class collected 414 cans of food during the first week. During the second week, they collected 243 cans. To the nearest ten, about how many more cans did they collect the first week than the the second week?

Estimate the difference by rounding to the nearest hundred.

671 - 357

Estimate the sum by rounding to the nearest hundred

416 + 253

Gretchen drove 253 miles on Monday and 108 miles on Tuesday. To the nearest hundred, about how many miles did she drive on Monday and Tuesday?

Estimate the sum by rounding each number to the nearest whole number and then adding.

7.114 + 6.122

The sum is approximately

Estimate the sum by rounding each number to the nearest whole number and then adding.

6.17 + 4.7

The sum is approximately

Estimate the sum by rounding each number to the nearest whole number and then adding.

8.598 + 2.78

The sum is approximately