Keystones — Cornerstone
Five GCSE retrieval questions · 6 July 2022 · mathsvault.uk/keystones
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1. Number
Calculate: 6 + (-10)
Answer: -4 -
2. Algebra
Simplify: 3x + 9x
Answer: 12x -
3. Geometry
Opposite = 14cm, hypotenuse = 16.2cm. Find the angle
Answer: 60° (approximately) -
4. Ratio
Simplify: 12:18:6
Answer: 2:3:1 -
5. Statistics
Calculate the mean of: 13, 40, 5, 6, 45, 44, 50, 6
Answer: 26.1