Keystones — Lintel
Five GCSE retrieval questions · 23 October 2021 · mathsvault.uk/keystones
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1. Number
Calculate: 2⁄4 + 1⁄5 + 5⁄6
Answer: 23⁄15 -
2. Algebra
Factorise fully: 9x² + 21x
Answer: 3x(3x + 7) -
3. Geometry
Opposite = 18cm, adjacent = 8cm. Calculate the angle
Answer: 66° -
4. Ratio
Find 56% of 398
Answer: 222.88 -
5. Statistics
Calculate the mean of: 47, 39, 19, 36, 28, 25, 6
Answer: 28.6