Decimals Practice
Tenths and hundredths — adding, taking away, multiplying and dividing. Every answer can be explained step by step, and the questions get harder only as you are ready for them.
No account, and the maths stays in your browser — more— less
This activity is for learning and practice. Anything it suggests is indicative only — it is not a formal assessment and not a substitute for a teacher or tutor.
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Set your country and age — change
Setting an age keeps the questions at the right level for that age. It does not lock anything — you can still try any topic, at any age, in any order. Levels are a guide only, not a curriculum.
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Saving your progress
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The three things that trip people up
- Line up the points, not the ends. 4.5 + 0.75 is not 4.5 written above 0.75 flush right. Write a zero on the end of 4.50 so the columns match, and it becomes an ordinary column sum.
- When multiplying, do the digits first and the point last. 0.4 × 3: work out 4 × 3 = 12, then put the point back — 0.4 has one digit after the point, so the answer does too, giving 1.2.
- Adding is not gluing two numbers together. 0.7 + 0.5 is 1.2, not 0.12. The tenths made more than one whole, so that whole carries across the point.
School levels
School levels are a guide only. They show where a skill is usually taught in each country and are not taken from, aligned to, or endorsed by any curriculum authority. Your school may cover it earlier or later.