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Lintel · Grades 5–7 Keystones #1 17 June 2022 Skills week 1 of 7
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Keystones — Lintel

Five GCSE retrieval questions · 17 June 2022 · mathsvault.uk/keystones

  1. 1. Number Converting to standard form

    69000

    Answer: 6.9 × 104
  2. 2. Algebra Factorising monic quadratics

    Factorise: x² - 13x + 42

    Answer: (x - 7)(x - 6)
  3. 3. Geometry SOHCAHTOA — missing length

    Adjacent = 12cm, angle = 35°. Find opposite

    Answer: 8.4cm
  4. 4. Ratio Mixed ratio problems

    Simplify: 8:10:4

    Answer: 4:5:2
  5. 5. Statistics Mean

    Calculate the mean of: 43, 26, 43, 26, 42, 6

    Answer: 31

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