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Cornerstone · Grades 3–5 Keystones #1 28 August 2018 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 28 August 2018 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 1⁄11 + 5⁄11

    Answer: 6⁄11
  2. 2. Algebra Two-step equations

    Solve: 5x - 15 = 30

    Answer: x = 9
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 4cm and b = 13cm

    Answer: 13.6cm
  4. 4. Ratio Sharing in a ratio

    Share 20 in the ratio 1:3

    Answer: 5 and 15
  5. 5. Statistics Mean

    Find the mean of: 4, 13, 8, 9, 17

    Answer: 10.2

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