Keystones — Bedrock
Five GCSE retrieval questions · 26 June 2021 · mathsvault.uk/keystones
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1. Number
Calculate: 34 + 20
Answer: 34 + 20 = 54 -
2. Algebra
Factorise: 20x + 24
Answer: 4(5x + 6) -
3. Geometry
Find the area of a right triangle with base 12cm and height 8cm
Answer: 48cm² -
4. Ratio
Simplify the ratio 40:35
Answer: 8:7 -
5. Statistics
Find the mean of: 10, 9, 9, 20, 17
Answer: 13