Keystones — Cornerstone
Five GCSE retrieval questions · 2 March 2017 · mathsvault.uk/keystones
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1. Number Adding fractions
Calculate: 9⁄11 + 1⁄11
Answer: 10⁄11 -
2. Algebra Two-step equations
Solve: 7x - 16 = 40
Answer: x = 8 -
3. Geometry Pythagoras — hypotenuse
Calculate the hypotenuse when a = 6cm and b = 11cm. Give your answer to 2 decimal places
Answer: 12.53cm -
4. Ratio Sharing in a ratio
Share 90 in the ratio 3:2
Answer: 54 and 36 -
5. Statistics Mean
Find the mean of: 7, 12, 4, 9
Answer: 8