Keystones — Cornerstone
Five GCSE retrieval questions · 20 July 2015 · mathsvault.uk/keystones
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1. Number Adding fractions
Calculate: 8⁄12 + 1⁄12
Answer: 3⁄4 -
2. Algebra Two-step equations
Solve: 6x - 12 = 42
Answer: x = 9 -
3. Geometry Pythagoras — hypotenuse
Calculate the hypotenuse when a = 6cm and b = 12cm. Give your answer to 2 decimal places
Answer: 13.42cm -
4. Ratio Sharing in a ratio
Share 80 in the ratio 2:3
Answer: 32 and 48 -
5. Statistics Mean
Find the mean of: 19, 11, 12, 10
Answer: 13