The Lesson
A number line can be used to subtract numbers.
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 = 4Top Tip
To Subtract, Go Left
Subtracting means going left on a number line.