Keystones — Capstone
Five GCSE retrieval questions · 16 November 2022 · mathsvault.uk/keystones
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1. Number
The sum of three consecutive numbers is 141. What are the numbers?
Answer: 46, 47, and 48 -
2. Algebra
Factorise fully: 9x² + 12x
Answer: 3x(3x + 4) -
3. Geometry
Adjacent = 19cm, hypotenuse = 34cm. Find the angle
Answer: 56° -
4. Ratio
Simplify the ratio 8m:800cm
Answer: 1:100 -
5. Statistics
The mean of 4 numbers is 40. If 3 of them are 38, 43, 28, what is the missing number?
Answer: 51