Keystones — Cornerstone
Five GCSE retrieval questions · 23 July 2022 · mathsvault.uk/keystones
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1. Number Adding fractions
Add: 5⁄7 + 3⁄6
Answer: 17⁄14 -
2. Algebra Two-step equations
Solve: 3x - 20 = 16
Answer: x = 12 -
3. Geometry Pythagoras — hypotenuse
Find the hypotenuse of a right triangle with sides 3cm and 4cm
Answer: 5cm -
4. Ratio Sharing in a ratio
Divide 112 in the ratio 2:3:3
Answer: 28, 42 and 42 -
5. Statistics Mean
Find the mean of: 4, 10, 2, 4, 10
Answer: 6