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Fractions, decimals & percentages cheat sheet (print or save as PDF)
Fractions, decimals & percentages cheat sheet (11+ exam prep)
A quick-reference page for common 11-plus fraction, decimal and percentage questions. Use it to check conversions, avoid typical mistakes, and keep working at a calm, steady pace.
How to use this cheat sheet
- Print or save as PDF and keep it beside 11+ maths practice.
- When your child is stuck, ask them to talk through the relevant example first, then retry the question.
- Revisit the “Common 11+ mistakes” list after each mock or practice set to spot patterns.
Quick conversions
The ones that show up again and again.
| Fraction | Decimal | Percent |
|---|---|---|
| 1/2 | 0.5 | 50% |
| 1/4 | 0.25 | 25% |
| 3/4 | 0.75 | 75% |
| 1/5 | 0.2 | 20% |
| 1/10 | 0.1 | 10% |
| 1/8 | 0.125 | 12.5% |
Common 11+ mistakes
These lose marks fast.
- Forgetting to simplify a fraction at the end.
- Mixing up “of” (multiply) vs “out of” (divide).
- Percent of a number: forgetting to divide by 100.
- Comparing fractions without a common denominator.
- Decimal place errors when multiplying/dividing by 10/100/1000.
Want this level of clarity in every practice session?
Studoo turns 11+ maths practice into short, focused sessions and shows parents where and why marks are being lost. Visit studoo.co.uk to start a free 7-day trial.