Example 1 · level 1 — a gentle start
Write 0.8 as a fraction in its simplest form.
- 4/5
- 8
- 5/4
- 2/25
Answer: 4/5 — 4/5 = 0.8 = 80%.
11+ fractions, decimals and percentages questions
Fractions, decimals and percentages comes up in the maths paper of every major 11+ format. Here is what the questions look like, the method that works under time pressure, and five worked examples with the full reasoning, from a gentle start to a hard paper.
Maths · examined by GL and CEM · 5 worked examples
What your child needs to know
- They are three ways of writing the same amount. Half is 1/2, 0.5 and 50%.
- Fraction to decimal: divide the top by the bottom. Decimal to percentage: multiply by 100.
Where marks get lost: Learn the common ones by heart — quarters, fifths, eighths. In an exam you will not have time to work them out.
Worked examples
Every question below is generated by the same engine your child practises on, and every answer is derived by our checker rather than written by hand — which is why we can put them on a public page at all.
Example 2 · level 2 — typical of early practice
Write 4/5 as a percent.
- 1%
- 80%
- 85%
- 8%
Answer: 80% — 4/5 = 0.8 = 80%.
Example 3 · level 3 — standard paper difficulty
Write 6/25 as a percent.
- 4%
- 0%
- 24%
- 2%
Answer: 24% — 6/25 = 0.24 = 24%.
Example 4 · level 4 — a harder paper
Write 1/25 as a percent.
- 25%
- 4%
- 0%
- 9%
Answer: 4% — 1/25 = 0.04 = 4%.
Example 5 · level 5 — the level that separates candidates
Write 102/125 as a percent.
- 8.2%
- 0.8%
- 1.2%
- 81.6%
Answer: 81.6% — 102/125 = 0.816 = 81.6%.
How to practise this at home
- Work in short, frequent sessions. Ten minutes daily beats an hour at the weekend, because the recall gap is what builds memory.
- Insist on written working, even for questions your child can do in their head — under exam pressure the method is what survives.
- When an answer is wrong, ask them to explain their reasoning before you correct it. The error is almost always in one step, not the whole approach.
Practise fractions, decimals and percentages with a tutor that explains
One4Learning serves questions at your child’s level, marks them instantly and — when one goes wrong — teaches the step they missed rather than showing the answer. Start with ten free questions, no account needed.
Take the free 10-question diagnostic →