Keystones — Lintel
Five GCSE retrieval questions · 28 November 2024 · mathsvault.uk/keystones
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1. Number
Calculate: 223 + 414
Answer: 223 + 414 = 637 -
2. Algebra
Factorise fully: 12x² + 16x
Answer: 4x(3x + 4) -
3. Geometry
Opposite = 14cm, adjacent = 17cm. Calculate the angle
Answer: 39.5° -
4. Ratio
Calculate 36.2% of 757
Answer: 274.03 -
5. Statistics
A bag has 7 red and 8 blue balls. What is the probability of picking a red ball?
Answer: 7⁄15