Keystones — Cornerstone
Five GCSE retrieval questions · 5 July 2021 · mathsvault.uk/keystones
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1. Number
Calculate: 85 + 78
Answer: 85 + 78 = 163 -
2. Algebra
Solve: x + 15 = 33
Answer: x = 18 -
3. Geometry
Opposite = 12cm, hypotenuse = 17cm. Find the angle
Answer: 45° (approximately) -
4. Ratio
Simplify the ratio 14:6
Answer: 7:3 -
5. Statistics
Find the mean of: 18, 12, 17, 16, 16
Answer: 15.8