Keystones — Capstone
Five GCSE retrieval questions · 16 September 2022 · mathsvault.uk/keystones
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1. Number
The sum of three consecutive numbers is 99. What are the numbers?
Answer: 32, 33, and 34 -
2. Algebra
Factorise fully: 21x² + 6x
Answer: 3x(7x + 2) -
3. Geometry
Find c if a = 14cm and b = 14cm in a right triangle
Answer: 19.8cm -
4. Ratio
Simplify the ratio 7m:700cm
Answer: 1:100 -
5. Statistics
A spinner has 2 red, 2 blue and 3 green sections. Probability of landing on red?
Answer: 2⁄7