Keystones — Cornerstone
Five GCSE retrieval questions · 29 April 2025 · mathsvault.uk/keystones
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1. Number
What is the missing number: 38 + ? = 175
Answer: 137 -
2. Algebra
Solve: 9x = 108
Answer: x = 12 -
3. Geometry
Opposite = 18cm, adjacent = 9cm. Calculate the angle
Answer: 63.4° -
4. Ratio
Simplify the ratio 35:30
Answer: 7:6 -
5. Statistics
Find the range of: 9, 11, 36, 30, 36
Answer: 27