Subtracting Decimals Step-by-Step Example
22 October 2026
Subtracting decimals can feel tricky at first, but it becomes much easier when you break it down. Here's a clear example to show your child how to work through each step with confidence.
Worked example
Subtract 5.30 − 2.17
Line up the decimal points: 5.30 − 2.17
Subtract the hundredths: 0 − 7. You cannot do this, so borrow 1 from the tenths. The 3 in the tenths becomes 2, and the 0 becomes 10. 10 − 7 = 3.
Subtract the tenths: 2 − 1 = 1.
Subtract the ones: 5 − 2 = 3.
The answer is 3.13.
| Step | Calculation | Result |
|---|---|---|
| Hundredths | 10 − 7 | 3 |
| Tenths | 2 − 1 | 1 |
| Ones | 5 − 2 | 3 |
Now your child can spot when to borrow and how to line up decimal points correctly. They are ready to practise more questions just like this one, building strong skills for 11+ maths.
