Keystones — Cornerstone
Five GCSE retrieval questions · 5 July 2016 · mathsvault.uk/keystones
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1. Number Adding fractions
Calculate: 8⁄11 + 1⁄11
Answer: 9⁄11 -
2. Algebra Two-step equations
Solve: 4x + 6 = 18
Answer: x = 3 -
3. Geometry Pythagoras — hypotenuse
Calculate the hypotenuse when a = 4cm and b = 7cm. Give your answer to 2 decimal places
Answer: 8.06cm -
4. Ratio Sharing in a ratio
Share 90 in the ratio 2:3
Answer: 36 and 54 -
5. Statistics Mean
Find the mean of: 6, 14, 17, 23
Answer: 15