Keystones — Cornerstone
Five GCSE retrieval questions · 18 March 2024 · mathsvault.uk/keystones
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1. Number
Calculate: 71 + 71
Answer: 71 + 71 = 142 -
2. Algebra
Factorise: 32x + 20
Answer: 4(8x + 5) -
3. Geometry
Opposite = 12cm, hypotenuse = 17cm. Find the angle
Answer: 45° (approximately) -
4. Ratio
Simplify: 12:4:12
Answer: 3:1:3 -
5. Statistics
Calculate the mean of: 9, 24, 31, 35, 7, 45, 38
Answer: 27