Keystones — Cornerstone
Five GCSE retrieval questions · 8 February 2017 · mathsvault.uk/keystones
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1. Number Adding fractions
Calculate: 1⁄12 + 8⁄12
Answer: 3⁄4 -
2. Algebra Two-step equations
Solve: 8x - 7 = 57
Answer: x = 8 -
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 75 in the ratio 3:2
Answer: 45 and 30 -
5. Statistics Mean
Find the mean of: 13, 19, 12, 16
Answer: 15