Keystones — Capstone
Five GCSE retrieval questions · 9 September 2022 · mathsvault.uk/keystones
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1. Number
The sum of three consecutive numbers is 102. What are the numbers?
Answer: 33, 34, and 35 -
2. Algebra
Factorise fully: 6x² + 10x
Answer: 2x(3x + 5) -
3. Geometry
Adjacent = 20cm, hypotenuse = 25cm. Find the angle
Answer: 36.9° -
4. Ratio
Simplify the ratio 2m:200cm
Answer: 1:100 -
5. Statistics
The mean of 4 numbers is 26. If 3 of them are 46, 21, 22, what is the missing number?
Answer: 15