Keystones — Lintel
Five GCSE retrieval questions · 14 May 2019 · mathsvault.uk/keystones
-
1. Number Converting to standard form
0.0006
Answer: 6 × 10-4 -
2. Algebra Factorising monic quadratics
Factorise: x² - 8x + 16
Answer: (x - 4)(x - 4) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 27cm, angle = 52°. Find opposite
Answer: 34.6cm -
4. Ratio Mixed ratio problems
£168.00 is shared between A and B in the ratio 2:1. How much does A receive?
Answer: £112.00 -
5. Statistics Mean
The mean of 6 numbers is 30. If 5 of them are 45, 41, 31, 31, 19, what is the missing number?
Answer: 13