Keystones — Cornerstone
Five GCSE retrieval questions · 19 January 2017 · mathsvault.uk/keystones
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1. Number Adding fractions
Calculate: 1⁄5 + 1⁄5
Answer: 2⁄5 -
2. Algebra Two-step equations
Solve: 5x - 14 = 36
Answer: x = 10 -
3. Geometry Pythagoras — hypotenuse
Calculate the hypotenuse when a = 12cm and b = 15cm. Give your answer to 2 decimal places
Answer: 19.21cm -
4. Ratio Sharing in a ratio
Share 105 in the ratio 4:3
Answer: 60 and 45 -
5. Statistics Mean
Calculate the mean of: 49, 41, 46, 10, 48, 21, 15. Give your answer to 2 decimal places
Answer: 32.86