Keystones — Lintel
Five GCSE retrieval questions · 18 October 2021 · mathsvault.uk/keystones
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1. Number
What is the missing number: 91 + ? = 144
Answer: 53 -
2. Algebra
Solve: 8x = 120
Answer: x = 15 -
3. Geometry
Adjacent = 20cm, hypotenuse = 37cm. Find the angle
Answer: 57.3° -
4. Ratio
Simplify: 12:16:20
Answer: 3:4:5 -
5. Statistics
Calculate the mean of: 27, 25, 8, 26, 31, 44, 19
Answer: 25.7