Keystones — Bedrock
Five GCSE retrieval questions · 3 December 2023 · mathsvault.uk/keystones
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1. Number
Calculate: 31 + 42
Answer: 31 + 42 = 73 -
2. Algebra
Expand: 8(x + 8)
Answer: 8x + 64 -
3. Geometry
Opposite = 9cm, hypotenuse = 18cm. Find the angle
Answer: 30° (approximately) -
4. Ratio
Calculate 10% of 149
Answer: 14.9 -
5. Statistics
Find the mean of: 5, 20, 16, 9, 3
Answer: 10.6