Keystones — Capstone
Five GCSE retrieval questions · 28 August 2022 · mathsvault.uk/keystones
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1. Number
The sum of three consecutive numbers is 117. What are the numbers?
Answer: 38, 39, and 40 -
2. Algebra
Factorise fully: 20x² + 15x
Answer: 5x(4x + 3) -
3. Geometry
Adjacent = 25cm, hypotenuse = 40cm. Find the angle
Answer: 51.3° -
4. Ratio
Simplify the ratio 3m:300cm
Answer: 1:100 -
5. Statistics
A spinner has 4 red, 2 blue and 4 green sections. Probability of landing on red?
Answer: 2⁄5