Keystones — Capstone
Five GCSE retrieval questions · 20 June 2023 · mathsvault.uk/keystones
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1. Number
The sum of three consecutive numbers is 117. What are the numbers?
Answer: 38, 39, and 40 -
2. Algebra
Expand: 8(6x - 12)
Answer: 48x - 96 -
3. Geometry
Adjacent = 12cm, hypotenuse = 28cm. Find the angle
Answer: 64.6° -
4. Ratio
Simplify the ratio 6m:600cm
Answer: 1:100 -
5. Statistics
The mean of 6 numbers is 29. If 5 of them are 27, 19, 20, 26, 31, what is the missing number?
Answer: 51