Keystones — Cornerstone
Five GCSE retrieval questions · 29 November 2021 · mathsvault.uk/keystones
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1. Number Adding fractions
Calculate: 3⁄9 + 4⁄9
Answer: 7⁄9 -
2. Algebra Two-step equations
Solve: 5x + 6 = 36
Answer: x = 6 -
3. Geometry Pythagoras — hypotenuse
Find the hypotenuse of a right triangle with sides 12cm and 35cm
Answer: 37cm -
4. Ratio Sharing in a ratio
Share 91 in the ratio 3:4
Answer: 39 and 52 -
5. Statistics Mean
Find the mean of: 15, 5, 9, 3, 2
Answer: 6.8