Keystones — Cornerstone
Five GCSE retrieval questions · 9 March 2014 · mathsvault.uk/keystones
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1. Number Adding fractions
Calculate: 2⁄5 + 1⁄5
Answer: 3⁄5 -
2. Algebra Two-step equations
Solve: 5x - 16 = 14
Answer: x = 6 -
3. Geometry Pythagoras — hypotenuse
Calculate the hypotenuse when a = 4cm and b = 15cm. Give your answer to 2 decimal places
Answer: 15.52cm -
4. Ratio Sharing in a ratio
Share 95 in the ratio 2:3
Answer: 38 and 57 -
5. Statistics Mean
Find the mean of: 20, 2, 16, 14
Answer: 13