Keystones — Cornerstone
Five GCSE retrieval questions · 7 September 2021 · mathsvault.uk/keystones
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1. Number Adding fractions
Add: 2⁄6 + 2⁄3
Answer: 1⁄1 -
2. Algebra Two-step equations
Solve: 5x + 7 = 32
Answer: x = 5 -
3. Geometry Pythagoras — hypotenuse
Find the hypotenuse of a right triangle with sides 20cm and 21cm
Answer: 29cm -
4. Ratio Sharing in a ratio
Share 32 in the ratio 1:3
Answer: 8 and 24 -
5. Statistics Mean
Calculate the mean of: 31, 34, 33, 25, 41, 31
Answer: 32.5