Keystones — Lintel
Five GCSE retrieval questions · 31 October 2022 · mathsvault.uk/keystones
-
1. Number Converting to standard form
71000000
Answer: 7.1 × 107 -
2. Algebra Factorising monic quadratics
Factorise: x² + 2x - 15
Answer: (x + 5)(x - 3) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 24cm, angle = 37°. Find opposite
Answer: 18.cm -
4. Ratio Mixed ratio problems
Divide 117 in the ratio 2:3:4
Answer: 26, 39 and 52 -
5. Statistics Mean
Calculate the mean of: 45, 49, 44, 20, 34, 40, 25, 18
Answer: 34.4