Keystones — Cornerstone
Five GCSE retrieval questions · 2 December 2023 · mathsvault.uk/keystones
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1. Number
Calculate: 73 + 74
Answer: 73 + 74 = 147 -
2. Algebra
Factorise: 21x + 9
Answer: 3(7x + 3) -
3. Geometry
Opposite = 11cm, adjacent = 15cm. Calculate the angle
Answer: 36.3° -
4. Ratio
Calculate 10% of 149
Answer: 14.9 -
5. Statistics
Calculate the mean of: 19, 48, 42, 40, 45, 38, 13
Answer: 35