Keystones — Cornerstone
Five GCSE retrieval questions · 17 March 2011 · mathsvault.uk/keystones
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1. Number Adding fractions
Calculate: 7⁄11 + 3⁄11
Answer: 10⁄11 -
2. Algebra Two-step equations
Solve: 2x + 14 = 32
Answer: x = 9 -
3. Geometry Pythagoras — hypotenuse
Calculate the hypotenuse when a = 5cm and b = 12cm
Answer: 13cm -
4. Ratio Sharing in a ratio
Share 54 in the ratio 1:2
Answer: 18 and 36 -
5. Statistics Mean
Find the mean of: 6, 14, 19, 9
Answer: 12