Keystones — Cornerstone
Five GCSE retrieval questions · 20 November 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 - 7 = 49
Answer: x = 8 -
3. Geometry Pythagoras — hypotenuse
Calculate the hypotenuse when a = 5cm and b = 9cm. Give your answer to 2 decimal places
Answer: 10.3cm -
4. Ratio Sharing in a ratio
Share 36 in the ratio 2:1
Answer: 24 and 12 -
5. Statistics Mean
Find the mean of: 9, 16, 17, 6
Answer: 12