Keystones — Bedrock
Five GCSE retrieval questions · 5 February 2023 · mathsvault.uk/keystones
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1. Number
Calculate: -5 + (-7)
Answer: -12 -
2. Algebra
Factorise: 28x + 8
Answer: 4(7x + 2) -
3. Geometry
Opposite = 9cm, hypotenuse = 12.7cm. Find the angle
Answer: 45° (approximately) -
4. Ratio
Simplify the ratio 15:25
Answer: 3:5 -
5. Statistics
Find the mean of: 18, 16, 16, 16, 16
Answer: 16.4