Keystones — Cornerstone
Five GCSE retrieval questions · 6 March 2014 · mathsvault.uk/keystones
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1. Number Adding fractions
Calculate: 2⁄10 + 6⁄10
Answer: 4⁄5 -
2. Algebra Two-step equations
Solve: 4x - 6 = 30
Answer: x = 9 -
3. Geometry Pythagoras — hypotenuse
Calculate the hypotenuse when a = 9cm and b = 15cm. Give your answer to 2 decimal places
Answer: 17.49cm -
4. Ratio Sharing in a ratio
Share 65 in the ratio 2:3
Answer: 26 and 39 -
5. Statistics Mean
Find the mean of: 15, 4, 9, 8
Answer: 9