Keystones — Capstone
Five GCSE retrieval questions · 29 December 2021 · mathsvault.uk/keystones
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1. Number
The sum of three consecutive numbers is 111. What are the numbers?
Answer: 36, 37, and 38 -
2. Algebra
Factorise fully: 35x² + 15x
Answer: 5x(7x + 3) -
3. Geometry
Adjacent = 12cm, hypotenuse = 21cm. Find the angle
Answer: 55.2° -
4. Ratio
Simplify the ratio 2m:200cm
Answer: 1:100 -
5. Statistics
The mean of 5 numbers is 26. If 4 of them are 43, 34, 40, 35, what is the missing number?
Answer: -22