Keystones — Cornerstone
Five GCSE retrieval questions · 24 April 2014 · mathsvault.uk/keystones
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1. Number Adding fractions
Calculate: 8⁄10 + 1⁄10
Answer: 9⁄10 -
2. Algebra Two-step equations
Solve: 8x - 15 = 41
Answer: x = 7 -
3. Geometry Pythagoras — hypotenuse
Calculate the hypotenuse when a = 6cm and b = 9cm. Give your answer to 2 decimal places
Answer: 10.82cm -
4. Ratio Sharing in a ratio
Share 45 in the ratio 1:4
Answer: 9 and 36 -
5. Statistics Mean
Calculate the mean of: 7, 23, 48, 42, 41, 26, 35. Give your answer to 2 decimal places
Answer: 31.71