Estimating Decimals

Front

What is estimating decimals?

Back

Estimating decimals involves rounding a decimal number to the nearest whole number or a specified place value to make calculations easier.

Front

How do you round 1.16 to the nearest whole number?

Back

1.16 rounds to 1 because the decimal part (0.16) is less than 0.5.

Front

What is the best estimate of 65.293?

Back

65, because 65.293 is closer to 65 than to 66.

Front

How do you round 19.324 to the nearest whole number?

Back

19.324 rounds to 19 because the decimal part (0.324) is less than 0.5.

Front

What is the best estimate of 142.876?

Back

143, because 142.876 is closer to 143 than to 142.

Front

How do you round 1.9 to the nearest whole number?

Back

1.9 rounds to 2 because the decimal part (0.9) is greater than or equal to 0.5.

Front

What is the rule for rounding decimals?

Back

If the decimal is 0.5 or higher, round up. If it is less than 0.5, round down.

Front

What is the best estimate of 3.45?

Back

3, because 3.45 is closer to 3 than to 4.

Front

How do you estimate 7.89 to the nearest whole number?

Back

7.89 rounds to 8 because the decimal part (0.89) is greater than or equal to 0.5.

Front

What is the best estimate of 12.1?

Back

12, because 12.1 is closer to 12 than to 13.