Keystones — Lintel
Five GCSE retrieval questions · 28 October 2022 · mathsvault.uk/keystones
-
1. Number Converting to standard form
31000
Answer: 3.1 × 104 -
2. Algebra Factorising monic quadratics
Factorise: x² + x - 30
Answer: (x + 6)(x - 5) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 15cm, angle = 59°. Find adjacent side
Answer: 7.7cm -
4. Ratio Mixed ratio problems
Divide 77 in the ratio 3:2:2
Answer: 33, 22 and 22 -
5. Statistics Mean
Calculate the mean of: 43, 42, 40, 13, 36, 5, 10
Answer: 27