Keystones — Lintel
Five GCSE retrieval questions · 27 November 2019 · mathsvault.uk/keystones
-
1. Number Converting to standard form
60000000
Answer: 6 × 107 -
2. Algebra Factorising monic quadratics
Factorise: x² - 9x + 20
Answer: (x - 5)(x - 4) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 37cm, angle = 52°. Find adjacent side
Answer: 22.8cm -
4. Ratio Mixed ratio problems
Simplify the ratio 6m:600cm
Answer: 1:100 -
5. Statistics Mean
The mean of 6 numbers is 27. If 5 of them are 47, 33, 38, 43, 17, what is the missing number?
Answer: -16