Keystones — Cornerstone
Five GCSE retrieval questions · 12 March 2021 · mathsvault.uk/keystones
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1. Number Adding fractions
Calculate: 2⁄8 + 5⁄8
Answer: 7⁄8 -
2. Algebra Two-step equations
Solve: 6x + 10 = 52
Answer: x = 7 -
3. Geometry Pythagoras — hypotenuse
Calculate the hypotenuse when a = 6cm and b = 8cm
Answer: 10cm -
4. Ratio Sharing in a ratio
Share 72 in the ratio 1:3
Answer: 18 and 54 -
5. Statistics Mean
Find the mean of: 9, 19, 18, 20, 12
Answer: 15.6