Keystones — Cornerstone
Five GCSE retrieval questions · 16 October 2018 · mathsvault.uk/keystones
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1. Number Adding fractions
Calculate: 3⁄11 + 4⁄11
Answer: 7⁄11 -
2. Algebra Two-step equations
Solve: 3x + 6 = 39
Answer: x = 11 -
3. Geometry Pythagoras — hypotenuse
Calculate the hypotenuse when a = 5cm and b = 5cm
Answer: 7.07cm -
4. Ratio Sharing in a ratio
Divide 96 in the ratio 1:3:4
Answer: 12, 36 and 48 -
5. Statistics Mean
Calculate the mean of: 48, 33, 45, 9, 44, 36, 50, 34
Answer: 37.4