Keystones — Lintel
Five GCSE retrieval questions · 1 August 2022 · mathsvault.uk/keystones
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1. Number
What is the missing number: 68 + ? = 186
Answer: 118 -
2. Algebra
Factorise fully: 15x² + 21x
Answer: 3x(5x + 7) -
3. Geometry
Opposite = 19cm, adjacent = 10cm. Calculate the angle
Answer: 62.2° -
4. Ratio
Simplify the ratio 3m:300cm
Answer: 1:100 -
5. Statistics
Calculate the mean of: 21, 14, 26, 25, 15, 41, 21
Answer: 23.3