Keystones — Lintel
Five GCSE retrieval questions · 16 February 2019 · mathsvault.uk/keystones
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1. Number Converting to standard form
84000
Answer: 8.4 × 104 -
2. Algebra Factorising monic quadratics
Factorise: x² - 5x + 6
Answer: (x - 2)(x - 3) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 20cm, angle = 36°. Find opposite
Answer: 14.5cm -
4. Ratio Mixed ratio problems
In ratio 4:1:3, what fraction is the second part?
Answer: 1⁄8 -
5. Statistics Mean
The mean of 5 numbers is 37. If 4 of them are 39, 22, 26, 46, what is the missing number?
Answer: 52