Keystones — Capstone
Five GCSE retrieval questions · 4 September 2024 · mathsvault.uk/keystones
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1. Number
Calculate: 2⁄3 + 1⁄2 + 1⁄3
Answer: 3⁄2 -
2. Algebra
Factorise fully: 15x² + 30x
Answer: 5x(3x + 6) -
3. Geometry
Find c if a = 9cm and b = 23cm in a right triangle
Answer: 24.7cm -
4. Ratio
Simplify the ratio 4m:400cm
Answer: 1:100 -
5. Statistics
A spinner has 5 red, 3 blue and 2 green sections. Probability of landing on red?
Answer: 1⁄2