Keystones — Cornerstone
Five GCSE retrieval questions · 9 July 2024 · mathsvault.uk/keystones
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1. Number
Calculate: 389 + 431
Answer: 389 + 431 = 820 -
2. Algebra
Solve: 9x = 45
Answer: x = 5 -
3. Geometry
Opposite = 11cm, hypotenuse = 12.7cm. Find the angle
Answer: 60° (approximately) -
4. Ratio
Simplify: 6:18:9
Answer: 2:6:3 -
5. Statistics
Calculate the mean of: 36, 5, 45, 26, 37, 39, 31
Answer: 31.3