GCSE Number and Arithmetic exam-style questions
Use Clevolab for GCSE exam-style practice in number and arithmetic. This page shows what the topic covers, what skills the current set targets, and a few real examples from the reviewed question bank.
About this topic
Clevolab treats number and arithmetic as repeated practice with explanation, not just answer checking. This page is designed to make the topic legible before you open the app.
The current GCSE set covers fractions, percentages, ratio, powers, standard form, and core number methods. 44 reviewed questions currently published for this page.
What you can practise
- Fractions, decimals, and percentages
- Ratio and proportion
- Powers, roots, and indices
- Standard form
- Number fluency and arithmetic reasoning
Real sample questions from the current set
These examples come from the reviewed questions currently stored for this topic. They are here so the page shows the actual flavour of Clevolab, not just a summary.
Sample question
A shop offers $25\%$ off a £64 jacket. What is the sale price?
- A£48Correct answer
- B£16Answer option
- C£54Answer option
- D£58Answer option
Why this answer is right
Find $25\%$ of £64: that is £16. Subtract: £64−£16 = £48.
Compute the discount: $$0.25\times 64=16$$ Subtract from the original: $$64-16=48$$ Alternatively use the multiplier $0.75$: $$0.75\times 64=48$$ £16 is just the discount, not the final price.
Sample question
Which number is prime?
- A27Answer option
- B33Answer option
- C29Correct answer
- D39Answer option
Why this answer is right
A prime has exactly two factors. $29$ has no factors other than $1$ and $29$. The others are composite: $27=3^3$, $33=3\times 11$, $39=3\times 13$.
Check divisibility by small primes. $29$ is not divisible by $2,3,5$, so it is prime. $27=3\times 9$, $33=3\times 11$, and $39=3\times 13$, so each has more than two factors. Therefore $29$ is the only prime listed.
Sample question
Write $\frac{3}{8}$ as a decimal.
- A0.375Correct answer
- B0.35Answer option
- C0.3Answer option
- D0.38Answer option
Why this answer is right
Divide 3 by 8: $\frac{3}{8}=\frac{30}{80}=0.375$.
Compute the fraction as a decimal by division or by equivalent fractions. Since $$\frac{1}{8}=0.125$$ Multiply by $3$ to get $$\frac{3}{8}=3\times 0.125=0.375$$ Close values like $0.38$ come from rounding too soon.
How this page fits into Clevolab
Clevolab is broader than any one exam mode. GCSE and A-level pages are useful entry points, while the wider project is about sharpening understanding through repeated topic practice.