Keystones — Capstone
Five GCSE retrieval questions · 6 November 2022 · mathsvault.uk/keystones
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1. Number
The sum of three consecutive numbers is 123. What are the numbers?
Answer: 40, 41, and 42 -
2. Algebra
Factorise fully: 8x² + 10x
Answer: 2x(4x + 5) -
3. Geometry
Find c if a = 12cm and b = 18cm in a right triangle
Answer: 21.6cm -
4. Ratio
Simplify the ratio 6m:600cm
Answer: 1:100 -
5. Statistics
A spinner has 3 red, 6 blue and 3 green sections. Probability of landing on red?
Answer: 1⁄4