Keystones — Bedrock
Five GCSE retrieval questions · 15 June 2021 · mathsvault.uk/keystones
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1. Number
Calculate: 21 + 42
Answer: 21 + 42 = 63 -
2. Algebra
Solve: x + 9 = 19
Answer: x = 10 -
3. Geometry
Opposite = 11cm, hypotenuse = 15.6cm. Find the angle
Answer: 45° (approximately) -
4. Ratio
Simplify the ratio 21:12
Answer: 7:4 -
5. Statistics
Find the mean of: 15, 7, 17
Answer: 13