Keystones — Cornerstone
Five GCSE retrieval questions · 5 October 2023 · mathsvault.uk/keystones
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1. Number
Calculate: 99 + 43
Answer: 99 + 43 = 142 -
2. Algebra
Solve: 4x = 44
Answer: x = 11 -
3. Geometry
Opposite = 8cm, hypotenuse = 16cm. Find the angle
Answer: 30° (approximately) -
4. Ratio
Simplify: 12:6:15
Answer: 4:2:5 -
5. Statistics
Find the mean of: 15, 17, 9, 17, 3
Answer: 12.2