Keystones — Cornerstone
Five GCSE retrieval questions · 8 July 2014 · mathsvault.uk/keystones
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1. Number Adding fractions
Calculate: 5⁄11 + 1⁄11
Answer: 6⁄11 -
2. Algebra Two-step equations
Solve: 5x - 5 = 55
Answer: x = 12 -
3. Geometry Pythagoras — hypotenuse
Calculate the hypotenuse when a = 6cm and b = 11cm. Give your answer to 2 decimal places
Answer: 12.53cm -
4. Ratio Sharing in a ratio
Divide 250 in the ratio 4:3:3
Answer: 100, 75 and 75 -
5. Statistics Mean
Find the mean of: 10, 14, 12
Answer: 12