Keystones — Cornerstone
Five GCSE retrieval questions · 29 June 2021 · mathsvault.uk/keystones
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1. Number
Calculate: 65 + 68
Answer: 65 + 68 = 133 -
2. Algebra
Expand: 2(2x + 2)
Answer: 4x + 4 -
3. Geometry
Calculate the area of a circle with diameter 21cm
Answer: 346.36cm² -
4. Ratio
Find 48% of 423
Answer: 203.04 -
5. Statistics
Calculate the mean of: 45, 47, 6, 37, 49, 8, 10, 41
Answer: 30.4