Keystones — Capstone
Five GCSE retrieval questions · 14 July 2025 · mathsvault.uk/keystones
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1. Number
0.0023
Answer: 2.3 × 10^-3 -
2. Algebra
Solve: x⁄6 = 1.5
Answer: x = 9 -
3. Geometry
Adjacent = 24cm, hypotenuse = 40cm. Find the angle
Answer: 53.1° -
4. Ratio
Simplify the ratio 7m:700cm
Answer: 1:100 -
5. Statistics
The mean of 5 numbers is 22. If 4 of them are 49, 28, 26, 41, what is the missing number?
Answer: -34