Keystones — Cornerstone
Five GCSE retrieval questions · 10 June 2015 · mathsvault.uk/keystones
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1. Number Adding fractions
Calculate: 1⁄8 + 5⁄8
Answer: 3⁄4 -
2. Algebra Two-step equations
Solve: 8x - 12 = 44
Answer: x = 7 -
3. Geometry Pythagoras — hypotenuse
Calculate the hypotenuse when a = 4cm and b = 12cm. Give your answer to 2 decimal places
Answer: 12.65cm -
4. Ratio Sharing in a ratio
Share 60 in the ratio 2:1
Answer: 40 and 20 -
5. Statistics Mean
Calculate the mean of: 23, 46, 50, 28, 30, 8, 14. Give your answer to 2 decimal places
Answer: 28.43