Keystones — Cornerstone
Five GCSE retrieval questions · 2 November 2024 · mathsvault.uk/keystones
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1. Number
Calculate: -10 + (-9)
Answer: -19 -
2. Algebra
Expand: 2(5x + 8)
Answer: 10x + 16 -
3. Geometry
Opposite = 6cm, hypotenuse = 6.9cm. Find the angle
Answer: 60° (approximately) -
4. Ratio
Simplify: 9:6:12
Answer: 3:2:4 -
5. Statistics
Calculate the mean of: 5, 24, 6, 31, 33, 31, 15
Answer: 20.7