  ### Comprehensive & curriculum aligned

In this worksheet, students must estimate the answer to addition sums by rounding two numbers to the nearest hundred and then adding. Key stage:  KS 2

Curriculum topic:   Number: Addition and Subtraction

Curriculum subtopic:   Estimate and Check Answers

Difficulty level:   #### Worksheet Overview

We can estimate the answer to an addition sum by rounding the numbers to the nearest hundred before we add.

Example 1

Estimate the answer to the following sum by rounding the numbers to the nearest hundred and then adding.

326 + 567

326 + 567

↓        ↓

300 + 600 = 900

Example 2

Estimate the answer to the following sum by rounding the numbers to the nearest hundred and then adding.

150 + 415

150 + 415

↓        ↓

200 + 400 = 600

Remember that 150 rounds up to 200, 350 rounds up to 400, 250 rounds up to 300 etc.

### What is EdPlace?

We're your National Curriculum aligned online education content provider helping each child succeed in English, maths and science from year 1 to GCSE. With an EdPlace account you’ll be able to track and measure progress, helping each child achieve their best. We build confidence and attainment by personalising each child’s learning at a level that suits them.

Get started 