# Round Numbers to the Nearest 100 Before Adding

In this worksheet, students will learn to round numbers to the nearest hundred in order to estimate the answer to an addition.

Key stage:  KS 2

Curriculum topic:   Number: Number and Place Value

Curriculum subtopic:   Round Numbers Up/Down (to 10, 100 or 1000)

Difficulty level:

#### Worksheet Overview

In this activity, we will be rounding numbers to the nearest hundred to estimate the answer to an addition.

Example

Estimate the answer to the addition by first rounding both numbers to the nearest hundred.

543 + 781

 A

+

 B

=

 C

543 + 781

 500

+

 800

=

 1300

Remember when rounding to the nearest hundred, look at the tens place.

If the number in the tens place is less than 5, round down! If the number in the tens place is 5 or more, round up!

Are you ready to get rounding?

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