Keystones — Cornerstone
Five GCSE retrieval questions · 28 July 2022 · mathsvault.uk/keystones
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1. Number Adding fractions
Add: 4⁄7 + 3⁄5
Answer: 41⁄35 -
2. Algebra Two-step equations
Solve: 3x - 12 = 24
Answer: x = 12 -
3. Geometry Pythagoras — hypotenuse
Calculate the hypotenuse when a = 5cm and b = 4cm
Answer: 6.4cm -
4. Ratio Sharing in a ratio
Share 120 in the ratio 2:1
Answer: 80 and 40 -
5. Statistics Mean
Calculate the mean of: 47, 11, 24, 8, 44, 43
Answer: 29.5