Keystones — Cornerstone
Five GCSE retrieval questions · 25 November 2020 · mathsvault.uk/keystones
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1. Number Adding fractions
Calculate: 1⁄10 + 2⁄10
Answer: 3⁄10 -
2. Algebra Two-step equations
Solve: 6x + 13 = 79
Answer: x = 11 -
3. Geometry Pythagoras — hypotenuse
Calculate the hypotenuse when a = 6cm and b = 8cm
Answer: 10cm -
4. Ratio Sharing in a ratio
Share 42 in the ratio 1:2
Answer: 14 and 28 -
5. Statistics Mean
Find the mean of: 19, 18, 17, 15
Answer: 17.25