Keystones — Capstone
Five GCSE retrieval questions · 18 March 2025 · mathsvault.uk/keystones
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1. Number
0.00029
Answer: 2.9 × 10^-4 -
2. Algebra
Solve: x⁄8 = 1.75
Answer: x = 14 -
3. Geometry
A right triangle has hypotenuse 13cm and one side 5cm. Find its area
Answer: 30cm² -
4. Ratio
Simplify the ratio 2m:200cm
Answer: 1:100 -
5. Statistics
The mean of 6 numbers is 24. If 5 of them are 37, 44, 48, 36, 26, what is the missing number?
Answer: -47