Keystones — Lintel
Five GCSE retrieval questions · 31 May 2020 · mathsvault.uk/keystones
-
1. Number Converting to standard form
81000
Answer: 8.1 × 104 -
2. Algebra Factorising monic quadratics
Factorise: x² + 2x - 8
Answer: (x + 4)(x - 2) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 26cm, angle = 29°. Find adjacent side
Answer: 22.7cm -
4. Ratio Mixed ratio problems
Simplify the ratio 2m:200cm
Answer: 1:100 -
5. Statistics Mean
Calculate the mean of: 21, 10, 30, 19, 46, 32, 50, 29
Answer: 29.6