Keystones — Cornerstone
Five GCSE retrieval questions · 30 October 2016 · mathsvault.uk/keystones
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1. Number Adding fractions
Calculate: 5⁄7 + 1⁄7
Answer: 6⁄7 -
2. Algebra Two-step equations
Solve: 3x - 18 = 15
Answer: x = 11 -
3. Geometry Pythagoras — hypotenuse
Calculate the hypotenuse when a = 12cm and b = 7cm. Give your answer to 2 decimal places
Answer: 13.89cm -
4. Ratio Sharing in a ratio
Share 40 in the ratio 1:3
Answer: 10 and 30 -
5. Statistics Mean
Find the mean of: 4, 20, 13, 3
Answer: 10