Keystones — Cornerstone
Five GCSE retrieval questions · 18 November 2017 · mathsvault.uk/keystones
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1. Number Adding fractions
Calculate: 7⁄9 + 1⁄9
Answer: 8⁄9 -
2. Algebra Two-step equations
Solve: 2x + 10 = 28
Answer: x = 9 -
3. Geometry Pythagoras — hypotenuse
Calculate the hypotenuse when a = 5cm and b = 10cm. Give your answer to 2 decimal places
Answer: 11.18cm -
4. Ratio Sharing in a ratio
Share 63 in the ratio 4:3
Answer: 36 and 27 -
5. Statistics Mean
Find the mean of: 2, 11, 11
Answer: 8