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

Why do we round numbers?

Back

We round numbers to make calculations easier, to simplify data, and to make it easier to communicate numbers.

Front

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

Back

Rounding a decimal to the nearest whole number means looking at the digit in the tenths place. If it is 5 or greater, round up; if it is less than 5, round down.

Front

Round 3.7 to the nearest whole number.

Back

4

Front

Round 2.3 to the nearest whole number.

Back

2

Front

What is the tenths place in the decimal 4.56?

Back

The tenths place is the first digit to the right of the decimal point, which is 5 in this case.

Front

What is the hundredths place in the decimal 7.89?

Back

The hundredths place is the second digit to the right of the decimal point, which is 9 in this case.

Front

How do you round 6.45 to the nearest tenth?

Back

Look at the hundredths place (5). Since it is 5 or greater, round up. So, 6.45 rounds to 6.5.

Front

How do you round 8.12 to the nearest tenth?

Back

Look at the hundredths place (2). Since it is less than 5, round down. So, 8.12 rounds to 8.1.

Front

What is the rule for rounding up?

Back

If the digit to the right of the place you are rounding to is 5 or greater, you round up.