Keystones — Lintel
Five GCSE retrieval questions · 22 November 2024 · mathsvault.uk/keystones
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1. Number
What is the missing number: 81 + ? = 189
Answer: 108 -
2. Algebra
Solve: 6x - 3 = 3x + 18
Answer: x = 7 -
3. Geometry
Opposite = 11cm, adjacent = 10cm. Calculate the angle
Answer: 47.7° -
4. Ratio
Simplify: 6:15:6
Answer: 2:5:2 -
5. Statistics
Calculate the mean of: 31, 38, 50, 43, 31, 25, 20, 8
Answer: 30.8