Year 7. Addition & Subtraction of Decimals

Addition of Decimal Numbers

We follow the same approach that we would with whole numbers, and put the numbers below each other making sure the relevant columns line up then work across from the right to the left.

Worked Examples

  • Find
    • 3.7 + 1.5
    • 2.4 + 3.18
    • 3.91 + 2.7 + 0.9

Exercise 1

Subtracting decimals

Subtracting decimals follows exactly the same principles

Worked Examples

What is 3 – 1.4?

What is 2.4 – 1.86?

Exercise 2

Answers to both exercises