Keystones — Cornerstone
Five GCSE retrieval questions · 25 December 2024 · mathsvault.uk/keystones
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1. Number
What is the missing number: 95 + ? = 192
Answer: 97 -
2. Algebra
Factorise: 3x² + 3x
Answer: 3x(x + 1) -
3. Geometry
Opposite = 15cm, adjacent = 16cm. Calculate the angle
Answer: 43.2° -
4. Ratio
Simplify: 12:6:6
Answer: 2:1:1 -
5. Statistics
Calculate the mean of: 25, 10, 38, 39, 17, 45
Answer: 29