Keystones — Lintel
Five GCSE retrieval questions · 3 September 2025 · mathsvault.uk/keystones
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1. Number
Calculate: 897 + 513
Answer: 897 + 513 = 1410 -
2. Algebra
Solve: 5x = 20
Answer: x = 4 -
3. Geometry
Opposite = 15cm, adjacent = 10cm. Calculate the angle
Answer: 56.3° -
4. Ratio
Simplify: 15:12:18
Answer: 5:4:6 -
5. Statistics
A spinner has 3 red, 4 blue and 5 green sections. Probability of landing on red?
Answer: 1⁄4