Keystones — Cornerstone
Five GCSE retrieval questions · 5 July 2022 · mathsvault.uk/keystones
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1. Number Adding fractions
Add: 5⁄8 + 1⁄3
Answer: 23⁄24 -
2. Algebra Two-step equations
Solve: 4x + 7 = 19
Answer: x = 3 -
3. Geometry Pythagoras — hypotenuse
Calculate the hypotenuse when a = 4cm and b = 9cm
Answer: 9.85cm -
4. Ratio Sharing in a ratio
Share 24 in the ratio 1:3
Answer: 6 and 18 -
5. Statistics Mean
Calculate the mean of: 35, 49, 29, 35, 20, 37
Answer: 34.2