Keystones — Cornerstone
Five GCSE retrieval questions · 31 January 2025 · mathsvault.uk/keystones
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1. Number Adding fractions
Add: 4⁄7 + 2⁄3
Answer: 26⁄21 -
2. Algebra Two-step equations
Solve: 6x + 8 = 74
Answer: x = 11 -
3. Geometry Pythagoras — hypotenuse
Find the hypotenuse of a right triangle with sides 5cm and 12cm
Answer: 13cm -
4. Ratio Sharing in a ratio
Divide 176 in the ratio 1:3:4
Answer: 22, 66 and 88 -
5. Statistics Mean
Find the mean of: 6, 15, 11, 6
Answer: 9.5