Keystones — Cornerstone
Five GCSE retrieval questions · 9 June 2021 · mathsvault.uk/keystones
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1. Number Adding fractions
Add: 1⁄8 + 3⁄6
Answer: 5⁄8 -
2. Algebra Two-step equations
Solve: 2x - 18 = -6
Answer: x = 6 -
3. Geometry Pythagoras — hypotenuse
Calculate the hypotenuse when a = 5cm and b = 15cm
Answer: 15.81cm -
4. Ratio Sharing in a ratio
Share 65 in the ratio 1:4
Answer: 13 and 52 -
5. Statistics Mean
Find the mean of: 13, 19, 11, 17, 9
Answer: 13.8