Keystones — Cornerstone
Five GCSE retrieval questions · 28 July 2024 · mathsvault.uk/keystones
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1. Number
Calculate: 193 + 225
Answer: 193 + 225 = 418 -
2. Algebra
Solve: x + 9 = 25
Answer: x = 16 -
3. Geometry
Calculate perimeter: two sides are 12cm and 15cm at right angles
Answer: 46.2cm -
4. Ratio
Find 47% of 468
Answer: 219.96 -
5. Statistics
Calculate the mean of: 15, 47, 16, 29, 26, 8
Answer: 23.5