Keystones — Bedrock
Five GCSE retrieval questions · 12 September 2021 · mathsvault.uk/keystones
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1. Number
Calculate: 58 + 23
Answer: 58 + 23 = 81 -
2. Algebra
Factorise: 20x + 32
Answer: 4(5x + 8) -
3. Geometry
Opposite = 9cm, hypotenuse = 12.7cm. Find the angle
Answer: 45° (approximately) -
4. Ratio
Simplify the ratio 4:8
Answer: 1:2 -
5. Statistics
Find the mean of: 2, 18, 14, 19, 8
Answer: 12.2