Keystones — Cornerstone
Five GCSE retrieval questions · 5 October 2024 · mathsvault.uk/keystones
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1. Number
Calculate: 87 + 39
Answer: 87 + 39 = 126 -
2. Algebra
Solve: x + 15 = 18
Answer: x = 3 -
3. Geometry
Opposite = 6cm, hypotenuse = 8.5cm. Find the angle
Answer: 45° (approximately) -
4. Ratio
Simplify: 15:18:12
Answer: 5:6:4 -
5. Statistics
Find the mean of: 20, 13, 15, 9
Answer: 14.25