Keystones — Lintel
Five GCSE retrieval questions · 7 May 2023 · mathsvault.uk/keystones
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1. Number
Calculate: 991 + 549
Answer: 1540 -
2. Algebra
Factorise fully: 35x² + 20x
Answer: 5x(7x + 4) -
3. Geometry
Opposite = 14cm, adjacent = 20cm. Calculate the angle
Answer: 35° -
4. Ratio
Simplify: 6:10:8
Answer: 3:5:4 -
5. Statistics
A bag has 5 red and 7 blue balls. What is the probability of picking a red ball?
Answer: 5⁄12