Keystones — Lintel
Five GCSE retrieval questions · 25 April 2021 · mathsvault.uk/keystones
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1. Number
What is the missing number: 84 + ? = 189
Answer: 105 -
2. Algebra
Factorise fully: 6x² + 21x
Answer: 3x(2x + 7) -
3. Geometry
Adjacent = 24cm, hypotenuse = 43cm. Find the angle
Answer: 56.1° -
4. Ratio
Simplify: 18:9:9
Answer: 2:1:1 -
5. Statistics
Find the range of: 5, -13, 23, -3, -11
Answer: 36