Keystones — Bedrock
Five GCSE retrieval questions · 21 October 2021 · mathsvault.uk/keystones
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1. Number
Calculate: 95 + 66
Answer: 95 + 66 = 161 -
2. Algebra
Factorise: 9x + 21
Answer: 3(3x + 7) -
3. Geometry
Opposite = 11cm, hypotenuse = 15.6cm. Find the angle
Answer: 45° (approximately) -
4. Ratio
Simplify the ratio 9:24
Answer: 3:8 -
5. Statistics
Find the mean of: 17, 5, 17, 17, 16
Answer: 14.4