Keystones — Lintel
Five GCSE retrieval questions · 6 May 2018 · mathsvault.uk/keystones
-
1. Number Converting to standard form
0.00043
Answer: 4.3 × 10-4 -
2. Algebra Factorising monic quadratics
Factorise: x² - 12x + 35
Answer: (x - 7)(x - 5) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 12cm, angle = 43°. Find opposite
Answer: 11.2cm -
4. Ratio Mixed ratio problems
Divide 144 in the ratio 4:1:1
Answer: 96, 24 and 24 -
5. Statistics Mean
Calculate the mean of: 45, 16, 45, 34, 42, 6
Answer: 31.3