Keystones — Cornerstone
Five GCSE retrieval questions · 17 March 2023 · mathsvault.uk/keystones
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1. Number
Calculate: 31 + 43
Answer: 31 + 43 = 74 -
2. Algebra
Solve: 4x = 40
Answer: x = 10 -
3. Geometry
Opposite = 5cm, hypotenuse = 10cm. Find the angle
Answer: 30° (approximately) -
4. Ratio
Simplify: 20:8:24
Answer: 5:2:6 -
5. Statistics
Calculate the mean of: 7, 36, 35, 40, 30, 5, 39, 11
Answer: 25.4