Keystones — Cornerstone
Five GCSE retrieval questions · 28 March 2022 · mathsvault.uk/keystones
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1. Number Adding fractions
Add: 1⁄6 + 3⁄4
Answer: 11⁄12 -
2. Algebra Two-step equations
Solve: 3x + 15 = 42
Answer: x = 9 -
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 48 in the ratio 1:2:1
Answer: 12, 24 and 12 -
5. Statistics Mean
Find the mean of: 13, 8, 15, 10, 17
Answer: 12.6