Keystones — Capstone
Five GCSE retrieval questions · 6 September 2025 · mathsvault.uk/keystones
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1. Number
Calculate: 995 + 545
Answer: 1540 -
2. Algebra
Simplify: 11x - 2x + 9y - 3y
Answer: 9x + 6y -
3. Geometry
Adjacent = 28cm, hypotenuse = 36cm. Find the angle
Answer: 38.9° -
4. Ratio
Simplify the ratio 8m:800cm
Answer: 1:100 -
5. Statistics
The mean of 5 numbers is 24. If 4 of them are 28, 25, 15, 47, what is the missing number?
Answer: 5