Keystones — Lintel
Five GCSE retrieval questions · 10 September 2022 · mathsvault.uk/keystones
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1. Number Converting to standard form
0.068
Answer: 6.8 × 10-2 -
2. Algebra Factorising monic quadratics
Factorise: x² - 12x + 35
Answer: (x - 7)(x - 5) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 19cm, angle = 57°. Find opposite
Answer: 29.3cm -
4. Ratio Mixed ratio problems
£273.00 is shared between A and B in the ratio 2:5. How much does A receive?
Answer: £78.00 -
5. Statistics Mean
The mean of 4 numbers is 32. If 3 of them are 26, 26, 47, what is the missing number?
Answer: 29