Keystones — Cornerstone
Five GCSE retrieval questions · 18 June 2012 · mathsvault.uk/keystones
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1. Number Adding fractions
Calculate: 1⁄6 + 2⁄6
Answer: 1⁄2 -
2. Algebra Two-step equations
Solve: 4x + 10 = 58
Answer: x = 12 -
3. Geometry Pythagoras — hypotenuse
Calculate the hypotenuse when a = 6cm and b = 12cm. Give your answer to 2 decimal places
Answer: 13.42cm -
4. Ratio Sharing in a ratio
Divide 230 in the ratio 3:3:4
Answer: 69, 69 and 92 -
5. Statistics Mean
Find the mean of: 2, 8, 14
Answer: 8