Keystones — Cornerstone
Five GCSE retrieval questions · 15 June 2022 · mathsvault.uk/keystones
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1. Number
Calculate: 80 + 65
Answer: 80 + 65 = 145 -
2. Algebra
Factorise: 20x + 28
Answer: 4(5x + 7) -
3. Geometry
Opposite = 12cm, adjacent = 20cm. Calculate the angle
Answer: 31° -
4. Ratio
Simplify: 16:12:12
Answer: 4:3:3 -
5. Statistics
Calculate the mean of: 31, 28, 43, 15, 41, 10
Answer: 28