Keystones — Lintel
Five GCSE retrieval questions · 17 February 2025 · mathsvault.uk/keystones
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1. Number
What is the missing number: 84 + ? = 184
Answer: 100 -
2. Algebra
Solve: 8x - 9 = 6x + -1
Answer: x = 4 -
3. Geometry
Opposite = 18cm, adjacent = 18cm. Calculate the angle
Answer: 45° -
4. Ratio
Simplify the ratio 5m:500cm
Answer: 1:100 -
5. Statistics
A spinner has 3 red, 5 blue and 5 green sections. Probability of landing on red?
Answer: 3⁄13