Addition and Subtraction
Practice questions and examples in addition and subtraction using positive and negative numbers.
Example 3: Subtraction
When you are subtracting positive numbers using a number line, you move to the left.
Use a number line to work out 2 - 5.
Start at 2 and because you are subtracting, count five spaces to the left. You should end at -3.
2 - 5 = -3