Keystones — Lintel
Five GCSE retrieval questions · 29 June 2018 · mathsvault.uk/keystones
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1. Number Converting to standard form
86000
Answer: 8.6 × 104 -
2. Algebra Factorising monic quadratics
Factorise: x² - 9x + 18
Answer: (x - 3)(x - 6) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 15cm, angle = 57°. Find adjacent side
Answer: 8.2cm -
4. Ratio Mixed ratio problems
Simplify the ratio 7m:700cm
Answer: 1:100 -
5. Statistics Mean
The mean of 4 numbers is 26. If 3 of them are 48, 48, 46, what is the missing number?
Answer: -38