Keystones — Cornerstone
Five GCSE retrieval questions · 20 June 2022 · mathsvault.uk/keystones
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1. Number Adding fractions
Calculate: 2⁄6 + 2⁄6
Answer: 2⁄3 -
2. Algebra Two-step equations
Solve: 3x + 7 = 19
Answer: x = 4 -
3. Geometry Pythagoras — hypotenuse
Calculate the hypotenuse when a = 9cm and b = 8cm
Answer: 12.04cm -
4. Ratio Sharing in a ratio
Share 49 in the ratio 4:3
Answer: 28 and 21 -
5. Statistics Mean
Find the mean of: 13, 4, 17
Answer: 11.333333333333