Estimation with Sum and Difference

Estimation with Sum and Difference

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Estimate the value of 89 + 48 by rounding each number to the nearest ten.

The value of 89 + 48 is about

.

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Estimate the value of 336 + 568 by rounding each number to the nearest hundred.

The value of 336 + 568 is about

.

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Find the actual value of each of the following. (You can use estimation to see if your answer is reasonable.)

374 + 481 =

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Find the actual value of each of the following. (You can use estimation to see if your answer is reasonable.)

484 + 166 =

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Estimate the value of 89 - 48 by rounding each number to the nearest ten.

The value of 89 - 48 is about

.

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Estimate the value of 862 - 594 by rounding each number to the nearest hundred.

The value of 874 - 589 is about

.

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Find the actual value of each of the following. (You can use estimation to see if your answer is reasonable.)

906 - 524 =

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Find the actual value of each of the following. (You can use estimation to see if your answer is reasonable.)

695 - 167 =

Fill in the Blanks

Find the actual value of each of the following. (You can use estimation to see if your answer is reasonable.)

800 - 325 =