Keystones — Cornerstone
Five GCSE retrieval questions · 7 November 2022 · mathsvault.uk/keystones
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1. Number Adding fractions
Add: 1⁄7 + 1⁄4
Answer: 11⁄28 -
2. Algebra Two-step equations
Solve: 6x - 16 = 38
Answer: x = 9 -
3. Geometry Pythagoras — hypotenuse
Find the hypotenuse of a right triangle with sides 7cm and 24cm
Answer: 25cm -
4. Ratio Sharing in a ratio
Divide 224 in the ratio 1:3:4
Answer: 28, 84 and 112 -
5. Statistics Mean
Calculate the mean of: 17, 22, 46, 30, 11, 47, 44, 19
Answer: 29.5