Keystones — Cornerstone
Five GCSE retrieval questions · 9 February 2014 · mathsvault.uk/keystones
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1. Number Adding fractions
Calculate: 2⁄5 + 1⁄5
Answer: 3⁄5 -
2. Algebra Two-step equations
Solve: 2x + 8 = 14
Answer: x = 3 -
3. Geometry Pythagoras — hypotenuse
Calculate the hypotenuse when a = 11cm and b = 7cm. Give your answer to 2 decimal places
Answer: 13.04cm -
4. Ratio Sharing in a ratio
Divide 120 in the ratio 4:1:3
Answer: 60, 15 and 45 -
5. Statistics Mean
Find the mean of: 2, 16, 24
Answer: 14