Keystones — Cornerstone
Five GCSE retrieval questions · 1 August 2023 · mathsvault.uk/keystones
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1. Number
What is √81?
Answer: 9 -
2. Algebra
Simplify: 6x + 8x
Answer: 14x -
3. Geometry
Find the area of a right triangle with base 10cm and height 6cm
Answer: 30cm² -
4. Ratio
Simplify the ratio 10:35
Answer: 2:7 -
5. Statistics
Find the range of: 8, 9, 20, 9, 27
Answer: 19