Keystones — Capstone
Five GCSE retrieval questions · 29 August 2025 · mathsvault.uk/keystones
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1. Number
0.00018
Answer: 1.8 × 10^-4 -
2. Algebra
Simplify: 7x - 2x + 9y - y
Answer: 5x + 8y -
3. Geometry
A right triangle has hypotenuse 13cm and one side 5cm. Find its area
Answer: 30cm² -
4. Ratio
Simplify the ratio 4m:400cm
Answer: 1:100 -
5. Statistics
A spinner has 2 red, 5 blue and 6 green sections. Probability of landing on red?
Answer: 2⁄13