Keystones — Cornerstone
Five GCSE retrieval questions · 7 June 2013 · mathsvault.uk/keystones
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1. Number Adding fractions
Calculate: 6⁄8 + 1⁄8
Answer: 7⁄8 -
2. Algebra Two-step equations
Solve: 2x - 15 = 7
Answer: x = 11 -
3. Geometry Pythagoras — hypotenuse
Calculate the hypotenuse when a = 11cm and b = 12cm. Give your answer to 2 decimal places
Answer: 16.28cm -
4. Ratio Sharing in a ratio
Share 50 in the ratio 1:4
Answer: 10 and 40 -
5. Statistics Mean
Find the mean of: 9, 8, 1
Answer: 6