Keystones — Cornerstone
Five GCSE retrieval questions · 2 May 2022 · mathsvault.uk/keystones
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1. Number Adding fractions
Add: 7⁄8 + 2⁄4
Answer: 11⁄8 -
2. Algebra Two-step equations
Solve: 8x - 7 = 97
Answer: x = 13 -
3. Geometry Pythagoras — hypotenuse
Find the hypotenuse of a right triangle with sides 15cm and 36cm
Answer: 39cm -
4. Ratio Sharing in a ratio
Divide 52 in the ratio 1:2:1
Answer: 13, 26 and 13 -
5. Statistics Mean
Find the mean of: 11, 14, 9, 3, 10
Answer: 9.4