Keystones — Capstone
Five GCSE retrieval questions · 26 April 2023 · 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: 28x² + 8x
Answer: 4x(7x + 2) -
3. Geometry
Adjacent = 14cm, hypotenuse = 33cm. Find the angle
Answer: 64.9° -
4. Ratio
Simplify the ratio 8m:800cm
Answer: 1:100 -
5. Statistics
The mean of 4 numbers is 29. If 3 of them are 33, 27, 30, what is the missing number?
Answer: 26