Keystones — Cornerstone
Five GCSE retrieval questions · 21 April 2025 · mathsvault.uk/keystones
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1. Number
Add: 56.46 + 9.08
Answer: 56.46 + 9.08 = 65.54 -
2. Algebra
Solve: 2x = 16
Answer: x = 8 -
3. Geometry
Calculate the perimeter of a right triangle with sides 5cm and 12cm
Answer: 30cm -
4. Ratio
Simplify: 24:16:12
Answer: 6:4:3 -
5. Statistics
Calculate the range of: 47, 69, 70, 48, 52, 84
Answer: 37