Keystones — Cornerstone
Five GCSE retrieval questions · 3 June 2017 · mathsvault.uk/keystones
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1. Number Adding fractions
Calculate: 2⁄5 + 2⁄5
Answer: 4⁄5 -
2. Algebra Two-step equations
Solve: 5x + 4 = 39
Answer: x = 7 -
3. Geometry Pythagoras — hypotenuse
Calculate the hypotenuse when a = 3cm and b = 9cm. Give your answer to 2 decimal places
Answer: 9.49cm -
4. Ratio Sharing in a ratio
Share 49 in the ratio 3:4
Answer: 21 and 28 -
5. Statistics Mean
Find the mean of: 18, 4, 22, 8
Answer: 13