Keystones — Lintel
Five GCSE retrieval questions · 28 November 2021 · mathsvault.uk/keystones
-
1. Number Converting to standard form
0.035
Answer: 3.5 × 10-2 -
2. Algebra Factorising monic quadratics
Factorise: x² - 9x + 18
Answer: (x - 3)(x - 6) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 28cm, angle = 52°. Find opposite
Answer: 35.8cm -
4. Ratio Mixed ratio problems
Simplify: 12:6:15
Answer: 4:2:5 -
5. Statistics Mean
The mean of 4 numbers is 36. If 3 of them are 32, 32, 23, what is the missing number?
Answer: 57