Decimal numbers are fractions where the denominator is a power of ten, eg tenths, hundredths, thousandths etc.
The number of decimal places is the number of digits after the decimal point.
This is also equal to the number of zeros in the denominator of the fraction.
To round to a given number of decimal places look at the next decimal place.
Round these decimals to the number of decimal places indicated. Roll your mouse over the decimal to see the answer.
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