Keystones — Bedrock
Five GCSE retrieval questions · 10 July 2021 · mathsvault.uk/keystones
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1. Number
Calculate: 21 + 49
Answer: 21 + 49 = 70 -
2. Algebra
Factorise: 30x + 36
Answer: 6(5x + 6) -
3. Geometry
Opposite = 13cm, hypotenuse = 15cm. Find the angle
Answer: 60° (approximately) -
4. Ratio
Simplify the ratio 35:15
Answer: 7:3 -
5. Statistics
Find the mean of: 20, 10, 10, 13
Answer: 13.25