Keystones — Cornerstone
Five GCSE retrieval questions · 3 September 2023 · mathsvault.uk/keystones
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1. Number
Calculate: 89 + 27
Answer: 89 + 27 = 116 -
2. Algebra
Expand: 6(x + 3)
Answer: 6x + 18 -
3. Geometry
Opposite = 8cm, hypotenuse = 16cm. Find the angle
Answer: 30° (approximately) -
4. Ratio
Simplify: 16:12:20
Answer: 4:3:5 -
5. Statistics
Calculate the mean of: 7, 47, 33, 10, 25, 23
Answer: 24.2