Keystones — Bedrock
Five GCSE retrieval questions · 13 February 2023 · mathsvault.uk/keystones
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1. Number
Multiply: 81 × 7
Answer: 81 × 7 = 567 -
2. Algebra
Factorise: 30x + 12
Answer: 6(5x + 2) -
3. Geometry
Opposite = 7cm, hypotenuse = 14cm. Find the angle
Answer: 30° (approximately) -
4. Ratio
Simplify the ratio 15:6
Answer: 5:2 -
5. Statistics
Find the mean of: 7, 6, 14, 15, 19
Answer: 12.2