Keystones — Lintel
Five GCSE retrieval questions · 12 August 2020 · mathsvault.uk/keystones
-
1. Number Converting to standard form
0.04
Answer: 4 × 10-2 -
2. Algebra Factorising monic quadratics
Factorise: x² - 7x + 12
Answer: (x - 4)(x - 3) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 27cm, angle = 50°. Find adjacent side
Answer: 17.4cm -
4. Ratio Mixed ratio problems
Simplify the ratio 7m:700cm
Answer: 1:100 -
5. Statistics Mean
The mean of 5 numbers is 37. If 4 of them are 44, 28, 35, 49, what is the missing number?
Answer: 29