Keystones — Cornerstone
Five GCSE retrieval questions · 3 October 2018 · mathsvault.uk/keystones
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1. Number Adding fractions
Add: 4⁄6 + 1⁄3
Answer: 1⁄1 -
2. Algebra Two-step equations
Solve: 6x + 10 = 82
Answer: x = 12 -
3. Geometry Pythagoras — hypotenuse
Calculate the hypotenuse when a = 6cm and b = 7cm
Answer: 9.22cm -
4. Ratio Sharing in a ratio
Divide 96 in the ratio 2:1:1
Answer: 48, 24 and 24 -
5. Statistics Mean
Calculate the mean of: 19, 32, 48, 47, 35, 19, 6, 35
Answer: 30.1