Keystones — Capstone
Five GCSE retrieval questions · 30 March 2021 · mathsvault.uk/keystones
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1. Number
Simplify: √8 + √18
Answer: 2√2 + 3√2 = 5√2 -
2. Algebra
Solve: x⁄5 = 4.4
Answer: x = 22 -
3. Geometry
Adjacent = 19cm, hypotenuse = 30cm. Find the angle
Answer: 50.7° -
4. Ratio
Simplify the ratio 8m:800cm
Answer: 1:100 -
5. Statistics
The mean of 6 numbers is 36. If 5 of them are 24, 15, 36, 33, 49, what is the missing number?
Answer: 59