Keystones — Cornerstone
Five GCSE retrieval questions · 24 March 2012 · mathsvault.uk/keystones
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1. Number Adding fractions
Calculate: 4⁄6 + 1⁄6
Answer: 5⁄6 -
2. Algebra Two-step equations
Solve: 3x - 15 = 24
Answer: x = 13 -
3. Geometry Pythagoras — hypotenuse
Calculate the hypotenuse when a = 9cm and b = 15cm. Give your answer to 2 decimal places
Answer: 17.49cm -
4. Ratio Sharing in a ratio
Share 63 in the ratio 4:3
Answer: 36 and 27 -
5. Statistics Mean
Find the mean of: 9, 18, 14, 3
Answer: 11