Keystones — Cornerstone
Five GCSE retrieval questions · 1 December 2021 · mathsvault.uk/keystones
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1. Number
Calculate: 13 + (-15) + (-8)
Answer: -10 -
2. Algebra
Solve: x + 14 = 18
Answer: x = 4 -
3. Geometry
Calculate the area of a circle with diameter 15cm
Answer: 176.71cm² -
4. Ratio
Simplify: 6:6:4
Answer: 3:3:2 -
5. Statistics
Find the mean of: 3, 9, 12, 8
Answer: 8