Keystones — Lintel
Five GCSE retrieval questions · 12 December 2019 · mathsvault.uk/keystones
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1. Number Converting to standard form
70000000
Answer: 7 × 107 -
2. Algebra Factorising monic quadratics
Factorise: x² - 8x + 12
Answer: (x - 2)(x - 6) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 30cm, angle = 32°. Find opposite
Answer: 18.7cm -
4. Ratio Mixed ratio problems
Divide 132 in the ratio 4:1:1
Answer: 88, 22 and 22 -
5. Statistics Mean
Calculate the mean of: 28, 7, 13, 8, 17, 27, 33
Answer: 19