Keystones — Cornerstone
Five GCSE retrieval questions · 31 January 2023 · mathsvault.uk/keystones
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1. Number
Calculate: 85 + 75
Answer: 85 + 75 = 160 -
2. Algebra
Factorise: 7x² + 8x
Answer: x(7x + 8) -
3. Geometry
Opposite = 10cm, hypotenuse = 11.5cm. Find the angle
Answer: 60° (approximately) -
4. Ratio
Simplify the ratio 14:16
Answer: 7:8 -
5. Statistics
Find the mean of: 15, 4, 7, 17, 18
Answer: 12.2