Keystones — Cornerstone
Five GCSE retrieval questions · 21 August 2022 · mathsvault.uk/keystones
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1. Number
Calculate: 20 + 77
Answer: 20 + 77 = 97 -
2. Algebra
Factorise: 15x + 40
Answer: 5(3x + 8) -
3. Geometry
Opposite = 5cm, hypotenuse = 5.8cm. Find the angle
Answer: 60° (approximately) -
4. Ratio
Simplify the ratio 24:6
Answer: 4:1 -
5. Statistics
Calculate the mean of: 20, 5, 27, 29, 49, 10, 37, 28
Answer: 25.6