## The Lesson

A number line can be used to subtract numbers.Imagine we wanted to find

**7 − 3**.

## How to Subtract on a Number Line

Subtracting on a number line is easy.## Question

Use a number line to find**7 − 3**.

## Step-by-Step:

# 1

Find

**7**on the number line.**7**− 3

# 2

Move

**3**to the**left**along the number line.
7

**− 3**# 3

Read off the number you have reached.

## Answer:

7 − 3 =**4**

## Top Tip

## To Subtract, Go Left

**Subtracting**means going

**left**on a number line.