Keystones — Bedrock
Five GCSE retrieval questions · 25 July 2021 · mathsvault.uk/keystones
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1. Number
Calculate: 20 + 11
Answer: 20 + 11 = 31 -
2. Algebra
Factorise: 15x + 6
Answer: 3(5x + 2) -
3. Geometry
Opposite = 13cm, hypotenuse = 26cm. Find the angle
Answer: 30° (approximately) -
4. Ratio
Simplify the ratio 24:32
Answer: 3:4 -
5. Statistics
Find the mean of: 8, 20, 15, 18
Answer: 15.25