Estimate Sums & Differences

Front

What is estimation in math?

Back

Estimation is a way to find a number that is close enough to the right answer, often used to make calculations easier.

Front

How do you estimate a sum to the nearest ten?

Back

Round each number to the nearest ten and then add them together.

Front

Estimate the sum of 625 and 291 to the nearest ten.

Back

920

Front

How do you estimate a difference to the nearest ten?

Back

Round each number to the nearest ten and then subtract the smaller number from the larger number.

Front

Estimate the difference of 758 - 247 to the nearest ten.

Back

510

Front

What is the purpose of estimating sums and differences?

Back

Estimating helps to quickly check if an answer is reasonable without calculating the exact answer.

Front

How do you estimate a sum to the nearest hundred?

Back

Round each number to the nearest hundred and then add them together.

Front

Estimate the sum of 312 + 456 to the nearest ten.

Back

770

Front

How do you estimate a difference to the nearest hundred?

Back

Round each number to the nearest hundred and then subtract the smaller number from the larger number.

Front

Estimate the difference of 793 - 328 to the nearest hundred.

Back

500