Keystones — Lintel
Five GCSE retrieval questions · 13 December 2022 · mathsvault.uk/keystones
-
1. Number Converting to standard form
0.076
Answer: 7.6 × 10^-2 -
2. Algebra Factorising monic quadratics
Factorise: x² + 2x - 8
Answer: (x + 4)(x - 2) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 38cm, angle = 41°. Find adjacent side
Answer: 28.7cm -
4. Ratio Mixed ratio problems
Divide 52 in the ratio 1:1:2
Answer: 13, 13 and 26 -
5. Statistics Mean
Calculate the mean of: 27, 10, 23, 14, 15, 9
Answer: 16.3