Keystones — Capstone
Five GCSE retrieval questions · 23 March 2025 · mathsvault.uk/keystones
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1. Number
Calculate: 1⁄3 + 4⁄6 + 2⁄4
Answer: 3⁄2 -
2. Algebra
Solve: x⁄4 = 5
Answer: x = 20 -
3. Geometry
Adjacent = 28cm, hypotenuse = 34cm. Find the angle
Answer: 34.6° -
4. Ratio
Simplify the ratio 8m:800cm
Answer: 1:100 -
5. Statistics
The mean of 5 numbers is 29. If 4 of them are 39, 23, 47, 39, what is the missing number?
Answer: -3