Keystones — Cornerstone
Five GCSE retrieval questions · 23 January 2024 · mathsvault.uk/keystones
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1. Number
What is the missing number: 46 + ? = 180
Answer: 134 -
2. Algebra
Factorise: 12x + 28
Answer: 4(3x + 7) -
3. Geometry
Opposite = 7cm, hypotenuse = 9.9cm. Find the angle
Answer: 45° (approximately) -
4. Ratio
Simplify: 6:12:9
Answer: 2:4:3 -
5. Statistics
Calculate the mean of: 17, 48, 10, 25, 35, 18, 39
Answer: 27.4