Keystones — Lintel
Five GCSE retrieval questions · 31 October 2022 · mathsvault.uk/keystones
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1. Number
Calculate: 1⁄3 + 3⁄5 + 3⁄4
Answer: 101⁄60 -
2. Algebra
Solve: x⁄7 = 3.4285714285714
Answer: x = 24 -
3. Geometry
Find c if a = 20cm and b = 24cm in a right triangle
Answer: 31.2cm -
4. Ratio
Simplify: 12:6:15
Answer: 4:2:5 -
5. Statistics
Calculate the mean of: 31, 31, 5, 38, 48, 45, 48, 5
Answer: 31.4