Keystones — Lintel
Five GCSE retrieval questions · 16 August 2021 · mathsvault.uk/keystones
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1. Number
What is the missing number: 82 + ? = 139
Answer: 57 -
2. Algebra
Solve: 8x = 32
Answer: x = 4 -
3. Geometry
Adjacent = 12cm, hypotenuse = 22cm. Find the angle
Answer: 56.9° -
4. Ratio
Simplify: 8:16:20
Answer: 2:4:5 -
5. Statistics
Calculate the mean of: 40, 35, 16, 9, 8, 29, 15
Answer: 21.7