Keystones — Cornerstone
Five GCSE retrieval questions · 6 June 2021 · mathsvault.uk/keystones
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1. Number Adding fractions
Add: 2⁄3 + 3⁄6
Answer: 7⁄6 -
2. Algebra Two-step equations
Solve: 6x - 12 = 24
Answer: x = 6 -
3. Geometry Pythagoras — hypotenuse
Calculate the hypotenuse when a = 11cm and b = 14cm
Answer: 17.8cm -
4. Ratio Sharing in a ratio
Share 90 in the ratio 4:1
Answer: 72 and 18 -
5. Statistics Mean
Find the mean of: 5, 15, 6
Answer: 8.6666666666667