Keystones — Lintel
Five GCSE retrieval questions · 29 October 2022 · mathsvault.uk/keystones
-
1. Number Converting to standard form
0.0036
Answer: 3.6 × 10^-3 -
2. Algebra Factorising monic quadratics
Factorise: x² - 10x + 24
Answer: (x - 6)(x - 4) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 24cm, angle = 55°. Find opposite
Answer: 34.3cm -
4. Ratio Mixed ratio problems
Simplify: 9:15:9
Answer: 3:5:3 -
5. Statistics Mean
The mean of 6 numbers is 34. If 5 of them are 20, 27, 43, 33, 43, what is the missing number?
Answer: 38