Loading please wait

The smart way to improve grades

Comprehensive & curriculum aligned

Try an activity or get started for free

Find the Difference Using Addition or Subtraction

In this worksheet, students will use addition or subtraction to find the missing number.

Worksheet Overview

This activity is about finding the missing number in adding sums.



Find the value of the missing number.


number line to 100



35 +   = 49



We need to find the difference between the numbers 35 and 49.


We can start at 35 and count on to get to 49. This would be 14 numbers:  35 + 14 = 49

The answer is 14


We could also start at 49 and count back to 35.  This would also be 14 numbers: 49 - 35 = 14


Both methods are correct and give us the same answer of 14. Which method works best for you?


girl thinking

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

Try an activity or get started for free