Keystones — Cornerstone
Five GCSE retrieval questions · 21 November 2022 · mathsvault.uk/keystones
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1. Number Adding fractions
Add: 1⁄3 + 1⁄4
Answer: 7⁄12 -
2. Algebra Two-step equations
Solve: 7x + 15 = 71
Answer: x = 8 -
3. Geometry Pythagoras — hypotenuse
Calculate the hypotenuse when a = 11cm and b = 13cm
Answer: 17.03cm -
4. Ratio Sharing in a ratio
Share 85 in the ratio 1:4
Answer: 17 and 68 -
5. Statistics Mean
Find the mean of: 9, 17, 13
Answer: 13