Keystones — Cornerstone
Five GCSE retrieval questions · 5 June 2018 · mathsvault.uk/keystones
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1. Number Adding fractions
Calculate: 9⁄11 + 1⁄11
Answer: 10⁄11 -
2. Algebra Two-step equations
Solve: 4x - 8 = 52
Answer: x = 15 -
3. Geometry Pythagoras — hypotenuse
Calculate the hypotenuse when a = 6cm and b = 10cm
Answer: 11.66cm -
4. Ratio Sharing in a ratio
Divide 88 in the ratio 1:2:1
Answer: 22, 44 and 22 -
5. Statistics Mean
Find the mean of: 5, 18, 19, 19
Answer: 15.25