Rounding Decimals

Front

What is rounding?

Back

Rounding is the process of adjusting the digits of a number to make it simpler and easier to work with, while keeping its value close to what it was.

Front

What does it mean to round to the nearest whole number?

Back

Rounding to the nearest whole number means adjusting a decimal number to the closest whole number. If the decimal is 0.5 or higher, round up; if it's less than 0.5, round down.

Front

What is the unit rate?

Back

The unit rate is a comparison of two different quantities when they are combined together. It is often expressed as a quantity per one unit.

Front

How do you find the unit rate?

Back

To find the unit rate, divide the total quantity by the number of units. For example, if you earn $200 for 8 hours of work, divide 200 by 8 to find the rate per hour.

Front

What is 9/100 as a decimal?

Back

0.09

Front

What is 9/100 as a percent?

Back

9%.

Front

How do you round 215.781 to the nearest hundredth?

Back

Look at the third decimal place (1). Since it is less than 5, you keep the second decimal place (7) the same, so 215.78.

Front

What is the first step in rounding a decimal?

Back

Identify the place value to which you want to round (e.g., nearest whole number, tenth, hundredth).

Front

What happens if the digit after the place you are rounding to is 5 or more?

Back

If the digit is 5 or more, you round up the digit in the place you are rounding to.

Front

What happens if the digit after the place you are rounding to is less than 5?

Back

If the digit is less than 5, you keep the digit in the place you are rounding to the same.