Keystones — Lintel
Five GCSE retrieval questions · 29 August 2021 · mathsvault.uk/keystones
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1. Number
Calculate: 850 + 537
Answer: 850 + 537 = 1387 -
2. Algebra
Factorise fully: 35x² + 15x
Answer: 5x(7x + 3) -
3. Geometry
Find c if a = 19cm and b = 10cm in a right triangle
Answer: 21.5cm -
4. Ratio
Calculate 45.4% of 925
Answer: 419.95 -
5. Statistics
A spinner has 3 red, 4 blue and 6 green sections. Probability of landing on red?
Answer: 3⁄13