Keystones — Cornerstone
Five GCSE retrieval questions · 9 July 2021 · mathsvault.uk/keystones
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1. Number
Calculate: -28 + (-15)
Answer: -43 -
2. Algebra
Solve: x + 3 = 23
Answer: x = 20 -
3. Geometry
Opposite = 18cm, adjacent = 10cm. Calculate the angle
Answer: 60.9° -
4. Ratio
Calculate 50% of 46
Answer: 23 -
5. Statistics
Find the mean of: 15, 17, 3
Answer: 11.666666666667