Keystones — Cornerstone
Five GCSE retrieval questions · 3 July 2022 · mathsvault.uk/keystones
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1. Number Adding fractions
Calculate: 1⁄6 + 4⁄6
Answer: 5⁄6 -
2. Algebra Two-step equations
Solve: 7x - 8 = 20
Answer: x = 4 -
3. Geometry Pythagoras — hypotenuse
Calculate the hypotenuse when a = 9cm and b = 11cm
Answer: 14.21cm -
4. Ratio Sharing in a ratio
Divide 280 in the ratio 4:3:3
Answer: 112, 84 and 84 -
5. Statistics Mean
Calculate the mean of: 17, 36, 14, 50, 22, 38, 14
Answer: 27.3