Keystones — Cornerstone
Five GCSE retrieval questions · 31 July 2017 · mathsvault.uk/keystones
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1. Number Adding fractions
Calculate: 1⁄7 + 4⁄7
Answer: 5⁄7 -
2. Algebra Two-step equations
Solve: 7x - 12 = 58
Answer: x = 10 -
3. Geometry Pythagoras — hypotenuse
Calculate the hypotenuse when a = 7cm and b = 11cm. Give your answer to 2 decimal places
Answer: 13.04cm -
4. Ratio Sharing in a ratio
Share 112 in the ratio 3:4
Answer: 48 and 64 -
5. Statistics Mean
Find the mean of: 16, 8, 13, 5, 18
Answer: 12