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Lintel · Grades 5–7 Keystones #1 11 January 2019 Skills week 1 of 7
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Keystones — Lintel

Five GCSE retrieval questions · 11 January 2019 · mathsvault.uk/keystones

  1. 1. Number Converting to standard form

    20000000

    Answer: 2 × 107
  2. 2. Algebra Factorising monic quadratics

    Factorise: x² - 8x + 16

    Answer: (x - 4)(x - 4)
  3. 3. Geometry SOHCAHTOA — missing length

    Hypotenuse = 26cm, angle = 44°. Find adjacent side

    Answer: 18.7cm
  4. 4. Ratio Mixed ratio problems

    Simplify: 18:6:9

    Answer: 6:2:3
  5. 5. Statistics Mean

    Calculate the mean of: 34, 34, 13, 30, 23, 20

    Answer: 25.7

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