Rounding Numbers

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In a question about rounding, the question will tell us which place value to

round to. It may say ‘round to the nearest hundred’ or ‘round to the nearest

thousand’.

In order to round, we have to look at the digit to the right of the one we need to

be rounding. So if we’re rounding to the nearest hundred, we have to look at

the tens column.

If the number in that column is 4 or less , the number is rounded down. If the

number in that column is 5 or more, the number is rounded up.We can also

use this same method on decimal numbers.

Example 1. Let’s try rounding 3 different numbers to the nearest hundred: 4562, 8631 and 9784 As we’re rounding to the nearest hundred, we need to look at the tens column.In 4562, the tens column has a 6 so we have to round UP. 4562 ——> 4600 In 8631, the tens column has a 3 so we have to round DOWN. 8631 ——> 8600 In 9784, the tens column has an 8 so we have to round UP. 9784 ——> 9700 |

Sometimes, if there is a question with complicated numbers in a calculation,

you can use rounding to get a quick estimate of the answer.

1. Zain: Favourite basketball hall in the rangers. He recorded how many

people attend three game over the past three months.

Related Topics

Place-value Ordering Numbers Polygons

Quadrilaterals Addition-Calculations Subtraction-Calculations