Keystones — Cornerstone
Five GCSE retrieval questions · 3 May 2015 · mathsvault.uk/keystones
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1. Number Adding fractions
Calculate: 3⁄5 + 1⁄5
Answer: 4⁄5 -
2. Algebra Two-step equations
Solve: 7x + 8 = 92
Answer: x = 12 -
3. Geometry Pythagoras — hypotenuse
Calculate the hypotenuse when a = 8cm and b = 5cm. Give your answer to 2 decimal places
Answer: 9.43cm -
4. Ratio Sharing in a ratio
Share 133 in the ratio 4:3
Answer: 76 and 57 -
5. Statistics Mean
Calculate the mean of: 37, 31, 20, 43, 14, 48. Give your answer to 2 decimal places
Answer: 32.17