Keystones — Bedrock
Five GCSE retrieval questions · 21 January 2025 · mathsvault.uk/keystones
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1. Number
Calculate: 90 + 93
Answer: 90 + 93 = 183 -
2. Algebra
Expand: 3(x + 7)
Answer: 3x + 21 -
3. Geometry
Opposite = 12cm, hypotenuse = 24cm. Find the angle
Answer: 30° (approximately) -
4. Ratio
Simplify the ratio 8:20
Answer: 2:5 -
5. Statistics
Find the mean of: 14, 12, 9, 17
Answer: 13