Keystones — Cornerstone
Five GCSE retrieval questions · 7 January 2012 · mathsvault.uk/keystones
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1. Number Adding fractions
Calculate: 4⁄7 + 2⁄7
Answer: 6⁄7 -
2. Algebra Two-step equations
Solve: 7x + 11 = 60
Answer: x = 7 -
3. Geometry Pythagoras — hypotenuse
Calculate the hypotenuse when a = 3cm and b = 15cm. Give your answer to 2 decimal places
Answer: 15.3cm -
4. Ratio Sharing in a ratio
Share 75 in the ratio 1:4
Answer: 15 and 60 -
5. Statistics Mean
Calculate the mean of: 46, 29, 33, 22, 48, 36, 31
Answer: 35