Keystones — Cornerstone
Five GCSE retrieval questions · 28 June 2021 · mathsvault.uk/keystones
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1. Number
Calculate: 779 + 687
Answer: 779 + 687 = 1466 -
2. Algebra
Solve: x + 2 = 14
Answer: x = 12 -
3. Geometry
Find the perimeter of a right triangle with sides 3cm, 4cm, 5cm
Answer: 12cm -
4. Ratio
Find 77% of 217
Answer: 167.09 -
5. Statistics
Find the mean of: 9, 13, 13, 17, 20
Answer: 14.4