Keystones — Cornerstone
Five GCSE retrieval questions · 13 May 2024 · mathsvault.uk/keystones
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1. Number
Calculate: 46 + 22
Answer: 46 + 22 = 68 -
2. Algebra
Solve: x + 15 = 18
Answer: x = 3 -
3. Geometry
Calculate perimeter: two sides are 11cm and 7cm at right angles
Answer: 31cm -
4. Ratio
Simplify: 12:18:6
Answer: 2:3:1 -
5. Statistics
Calculate the mean of: 50, 29, 9, 17, 30, 45, 29
Answer: 29.9