Keystones — Lintel
Five GCSE retrieval questions · 23 October 2020 · mathsvault.uk/keystones
-
1. Number Converting to standard form
0.066
Answer: 6.6 × 10-2 -
2. Algebra Factorising monic quadratics
Factorise: x² + x - 20
Answer: (x + 5)(x - 4) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 33cm, angle = 25°. Find adjacent side
Answer: 29.9cm -
4. Ratio Mixed ratio problems
Divide 120 in the ratio 4:1:3
Answer: 60, 15 and 45 -
5. Statistics Mean
Calculate the mean of: 39, 31, 30, 29, 49, 21, 5, 28
Answer: 29