Keystones — Lintel
Five GCSE retrieval questions · 16 July 2025 · mathsvault.uk/keystones
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1. Number
What is the missing number: 59 + ? = 152
Answer: 93 -
2. Algebra
Simplify: 6x - 4x + 5y - 3y
Answer: 2x + 2y -
3. Geometry
Opposite = 13cm, adjacent = 19cm. Calculate the angle
Answer: 34.4° -
4. Ratio
Calculate 24.5% of 676
Answer: 165.62 -
5. Statistics
A spinner has 3 red, 5 blue and 2 green sections. Probability of landing on red?
Answer: 3⁄10