Keystones — Lintel
Five GCSE retrieval questions · 8 May 2020 · mathsvault.uk/keystones
-
1. Number Converting to standard form
0.00017
Answer: 1.7 × 10-4 -
2. Algebra Factorising monic quadratics
Factorise: x² + x - 12
Answer: (x + 4)(x - 3) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 16cm, angle = 33°. Find opposite
Answer: 10.4cm -
4. Ratio Mixed ratio problems
£392.00 is shared between A and B in the ratio 3:5. How much does A receive?
Answer: £147.00 -
5. Statistics Mean
The mean of 6 numbers is 29. If 5 of them are 26, 17, 27, 43, 49, what is the missing number?
Answer: 12