Keystones — Cornerstone
Five GCSE retrieval questions · 12 January 2022 · mathsvault.uk/keystones
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1. Number
Calculate: 331 + 352
Answer: 331 + 352 = 683 -
2. Algebra
Solve: 5x = 75
Answer: x = 15 -
3. Geometry
Opposite = 20cm, adjacent = 11cm. Calculate the angle
Answer: 61.2° -
4. Ratio
Calculate 25% of 164
Answer: 41 -
5. Statistics
Calculate the mean of: 20, 20, 35, 12, 7, 22, 31
Answer: 21