Keystones — Cornerstone
Five GCSE retrieval questions · 15 November 2025 · mathsvault.uk/keystones
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1. Number Adding fractions
Calculate: 5⁄7 + 1⁄7
Answer: 6⁄7 -
2. Algebra Two-step equations
Solve: 6x + 15 = 63
Answer: x = 8 -
3. Geometry Pythagoras — hypotenuse
Find the hypotenuse of a right triangle with sides 3cm and 4cm
Answer: 5cm -
4. Ratio Sharing in a ratio
Share 52 in the ratio 3:1
Answer: 39 and 13 -
5. Statistics Mean
Find the mean of: 3, 2, 15, 10, 17
Answer: 9.4