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Cornerstone · Grades 3–5 Keystones #1 24 November 2018 Skills week 1 of 7
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Five GCSE retrieval questions · 24 November 2018 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 3⁄6 + 1⁄6

    Answer: 2⁄3
  2. 2. Algebra Two-step equations

    Solve: 4x - 8 = 40

    Answer: x = 12
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 12cm and b = 4cm

    Answer: 12.65cm
  4. 4. Ratio Sharing in a ratio

    Divide 100 in the ratio 1:2:2

    Answer: 20, 40 and 40
  5. 5. Statistics Mean

    Calculate the mean of: 34, 39, 43, 7, 44, 44, 10, 31

    Answer: 31.5

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