Keystones — Cornerstone
Five GCSE retrieval questions · 12 December 2023 · mathsvault.uk/keystones
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1. Number
Calculate: 215 + 309
Answer: 215 + 309 = 524 -
2. Algebra
Factorise: 8x² + 6x
Answer: 2x(4x + 3) -
3. Geometry
Opposite = 15cm, adjacent = 13cm. Calculate the angle
Answer: 49.1° -
4. Ratio
Find 83% of 399
Answer: 331.17 -
5. Statistics
Calculate the mean of: 15, 32, 33, 40, 28, 47, 12, 29
Answer: 29.5