Keystones — Cornerstone
Five GCSE retrieval questions · 11 June 2021 · mathsvault.uk/keystones
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1. Number
Calculate: 71 + 89
Answer: 71 + 89 = 160 -
2. Algebra
Expand: 5(x + 8)
Answer: 5x + 40 -
3. Geometry
Calculate the area of a circle with diameter 14cm
Answer: 153.94cm² -
4. Ratio
Find 46% of 151
Answer: 69.46 -
5. Statistics
Calculate the mean of: 5, 19, 50, 18, 8, 14, 28, 49
Answer: 23.9