Keystones — Capstone
Five GCSE retrieval questions · 7 August 2021 · mathsvault.uk/keystones
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1. Number
Calculate: 3⁄4 + 4⁄5 + 3⁄5
Answer: 43⁄20 -
2. Algebra
Solve: x⁄7 = 3.2857142857143
Answer: x = 23 -
3. Geometry
Adjacent = 14cm, hypotenuse = 27cm. Find the angle
Answer: 58.8° -
4. Ratio
Simplify the ratio 4m:400cm
Answer: 1:100 -
5. Statistics
The mean of 5 numbers is 20. If 4 of them are 33, 21, 26, 43, what is the missing number?
Answer: -23