Keystones — Cornerstone
Five GCSE retrieval questions · 1 June 2017 · mathsvault.uk/keystones
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1. Number Adding fractions
Calculate: 4⁄10 + 4⁄10
Answer: 4⁄5 -
2. Algebra Two-step equations
Solve: 7x - 11 = 73
Answer: x = 12 -
3. Geometry Pythagoras — hypotenuse
Calculate the hypotenuse when a = 12cm and b = 11cm. Give your answer to 2 decimal places
Answer: 16.28cm -
4. Ratio Sharing in a ratio
Share 33 in the ratio 1:2
Answer: 11 and 22 -
5. Statistics Mean
Calculate the mean of: 43, 25, 11, 6, 9, 15. Give your answer to 2 decimal places
Answer: 18.17