Keystones — Cornerstone
Five GCSE retrieval questions · 3 September 2024 · mathsvault.uk/keystones
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1. Number
Calculate: 87 + 81
Answer: 87 + 81 = 168 -
2. Algebra
Solve: 5x = 50
Answer: x = 10 -
3. Geometry
Opposite = 6cm, hypotenuse = 8.5cm. Find the angle
Answer: 45° (approximately) -
4. Ratio
Simplify: 15:15:6
Answer: 5:5:2 -
5. Statistics
Calculate the mean of: 8, 18, 49, 31, 28, 28, 9
Answer: 24.4