Keystones — Capstone
Five GCSE retrieval questions · 5 December 2023 · mathsvault.uk/keystones
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1. Number
Simplify: √8 + √18
Answer: 2√2 + 3√2 = 5√2 -
2. Algebra
Solve: x⁄5 = 7.6
Answer: x = 38 -
3. Geometry
Adjacent = 19cm, hypotenuse = 36cm. Find the angle
Answer: 58.1° -
4. Ratio
Simplify the ratio 6m:600cm
Answer: 1:100 -
5. Statistics
The mean of 5 numbers is 33. If 4 of them are 39, 40, 34, 32, what is the missing number?
Answer: 20