Round whole numbers and decimals Higher

The number 5 is important when you are rounding numbers.

To round any number you need to follow a rule.

To round 17,842 to the nearest 100, you need to round the digit in the hundred column.

Look at the digit to its right, in the tens column to see which multiple of 100 you need to round the number. The digit in the tens column is 4.

This number is closer to 17,800 than 17,900, so you need to round it to 17,800.

Rounding to two decimal places means rounding to the nearest hundredth.

One decimal place means to the nearest tenth.