Keystones — Lintel
Five GCSE retrieval questions · 5 February 2020 · mathsvault.uk/keystones
-
1. Number Converting to standard form
9900000
Answer: 9.9 × 106 -
2. Algebra Factorising monic quadratics
Factorise: x² + x - 6
Answer: (x + 3)(x - 2) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 30cm, angle = 35°. Find opposite
Answer: 21cm -
4. Ratio Mixed ratio problems
Simplify the ratio 7m:700cm
Answer: 1:100 -
5. Statistics Mean
The mean of 5 numbers is 40. If 4 of them are 25, 38, 44, 27, what is the missing number?
Answer: 66