Keystones — Cornerstone
Five GCSE retrieval questions · 22 August 2013 · mathsvault.uk/keystones
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1. Number Adding fractions
Calculate: 6⁄9 + 2⁄9
Answer: 8⁄9 -
2. Algebra Two-step equations
Solve: 6x - 14 = 10
Answer: x = 4 -
3. Geometry Pythagoras — hypotenuse
Calculate the hypotenuse when a = 6cm and b = 13cm. Give your answer to 2 decimal places
Answer: 14.32cm -
4. Ratio Sharing in a ratio
Share 64 in the ratio 3:1
Answer: 48 and 16 -
5. Statistics Mean
Calculate the mean of: 10, 46, 14, 43, 33, 22, 44, 45. Give your answer to 2 decimal places
Answer: 32.13