Keystones — Lintel
Five GCSE retrieval questions · 21 May 2020 · mathsvault.uk/keystones
-
1. Number Converting to standard form
0.0093
Answer: 9.3 × 10-3 -
2. Algebra Factorising monic quadratics
Factorise: x² - 7x + 12
Answer: (x - 3)(x - 4) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 40cm, angle = 54°. Find adjacent side
Answer: 23.5cm -
4. Ratio Mixed ratio problems
Divide 232 in the ratio 1:4:3
Answer: 29, 116 and 87 -
5. Statistics Mean
Calculate the mean of: 39, 50, 24, 10, 19, 32, 23, 20
Answer: 27.1