Add & Subtract Rounding

Front

What is rounding?

Back

Rounding is the process of adjusting a number to make it simpler and easier to work with, usually to the nearest ten, hundred, thousand, etc.

Front

How do you round a number to the nearest ten?

Back

Look at the digit in the ones place. If it is 5 or more, round up. If it is 4 or less, round down.

Front

Estimate the difference: 47,623 - 12,385 to the nearest ten thousand.

Back

40,000

Front

Estimate the difference: 847,167 - 382,208 to the nearest thousand.

Back

465,000

Front

Estimate the sum: 56 + 43.

Back

100

Front

What does the word 'ABOUT' indicate in math?

Back

It indicates that you should estimate.

Front

Estimate the sum: 38,674 + 83,102 to the nearest thousand.

Back

122,000

Front

What is the purpose of estimating in math?

Back

Estimating helps to quickly find an approximate answer without calculating the exact value.

Front

When rounding 67 to the nearest ten, what is the result?

Back

70

Front

When rounding 34 to the nearest ten, what is the result?

Back

30