Keystones — Cornerstone
Five GCSE retrieval questions · 9 February 2025 · mathsvault.uk/keystones
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1. Number
What is the missing number: 49 + ? = 150
Answer: 101 -
2. Algebra
Solve: 3x = 42
Answer: x = 14 -
3. Geometry
Opposite = 13cm, adjacent = 13cm. Calculate the angle
Answer: 45° -
4. Ratio
Simplify: 24:20:20
Answer: 6:5:5 -
5. Statistics
Find the range of: 15, 20, 28, 28, 27
Answer: 13