Keystones — Cornerstone
Five GCSE retrieval questions · 22 August 2022 · mathsvault.uk/keystones
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1. Number Adding fractions
Add: 2⁄3 + 5⁄7
Answer: 29⁄21 -
2. Algebra Two-step equations
Solve: 4x + 14 = 30
Answer: x = 4 -
3. Geometry Pythagoras — hypotenuse
Calculate the hypotenuse when a = 6cm and b = 9cm
Answer: 10.82cm -
4. Ratio Sharing in a ratio
Divide 114 in the ratio 1:3:2
Answer: 19, 57 and 38 -
5. Statistics Mean
Calculate the mean of: 49, 41, 33, 20, 28, 47
Answer: 36.3