Keystones — Cornerstone
Five GCSE retrieval questions · 23 December 2022 · mathsvault.uk/keystones
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1. Number
Find the total of 168, 180, and 139
Answer: 487 -
2. Algebra
Factorise: 6x² + 5x
Answer: x(6x + 5) -
3. Geometry
Opposite = 13cm, hypotenuse = 18.4cm. Find the angle
Answer: 45° (approximately) -
4. Ratio
Simplify the ratio 25:15
Answer: 5:3 -
5. Statistics
Calculate the mean of: 28, 35, 34, 7, 7, 31, 45, 18
Answer: 25.6