Keystones — Lintel
Five GCSE retrieval questions · 17 November 2018 · mathsvault.uk/keystones
-
1. Number Converting to standard form
0.088
Answer: 8.8 × 10-2 -
2. Algebra Factorising monic quadratics
Factorise: x² + 2x - 8
Answer: (x + 4)(x - 2) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 38cm, angle = 50°. Find adjacent side
Answer: 24.4cm -
4. Ratio Mixed ratio problems
Divide 108 in the ratio 1:4:4
Answer: 12, 48 and 48 -
5. Statistics Mean
Calculate the mean of: 45, 35, 13, 26, 13, 6, 33, 23
Answer: 24.3