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Lintel · Grades 5–7 Keystones #1 22 May 2020 Skills week 1 of 7
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Keystones — Lintel

Five GCSE retrieval questions · 22 May 2020 · mathsvault.uk/keystones

  1. 1. Number Converting to standard form

    4400000

    Answer: 4.4 × 106
  2. 2. Algebra Factorising monic quadratics

    Factorise: x² - 7x + 10

    Answer: (x - 5)(x - 2)
  3. 3. Geometry SOHCAHTOA — missing length

    Adjacent = 18cm, angle = 39°. Find opposite

    Answer: 14.6cm
  4. 4. Ratio Mixed ratio problems

    Simplify: 6:10:8

    Answer: 3:5:4
  5. 5. Statistics Mean

    Calculate the mean of: 9, 9, 16, 18, 40, 32

    Answer: 20.7

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