Keystones — Bedrock
Five GCSE retrieval questions · 22 November 2021 · mathsvault.uk/keystones
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1. Number
Calculate: 39 + 18
Answer: 39 + 18 = 57 -
2. Algebra
Factorise: 8x + 20
Answer: 4(2x + 5) -
3. Geometry
Opposite = 8cm, hypotenuse = 16cm. Find the angle
Answer: 30° (approximately) -
4. Ratio
Simplify the ratio 12:20
Answer: 3:5 -
5. Statistics
Find the mean of: 15, 5, 19, 18
Answer: 14.25