Keystones — Cornerstone
Five GCSE retrieval questions · 14 January 2022 · mathsvault.uk/keystones
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1. Number Adding fractions
Calculate: 1⁄11 + 8⁄11
Answer: 9⁄11 -
2. Algebra Two-step equations
Solve: 3x + 5 = 29
Answer: x = 8 -
3. Geometry Pythagoras — hypotenuse
Find the hypotenuse of a right triangle with sides 7cm and 24cm
Answer: 25cm -
4. Ratio Sharing in a ratio
Share 60 in the ratio 1:2
Answer: 20 and 40 -
5. Statistics Mean
Calculate the mean of: 35, 35, 50, 24, 43, 26, 5
Answer: 31.1