Keystones — Cornerstone
Five GCSE retrieval questions · 2 August 2021 · mathsvault.uk/keystones
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1. Number
Add: 79.16 + 17.69
Answer: 79.16 + 17.69 = 96.85 -
2. Algebra
Solve: 5x + 9 = 3x + 19
Answer: x = 5 -
3. Geometry
Find the area of a circle with radius 3cm
Answer: 28.27cm² -
4. Ratio
Simplify: 20:20:16
Answer: 5:5:4 -
5. Statistics
Calculate the mean of: 46, 46, 47, 35, 17, 10, 43, 8
Answer: 31.5