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

  1. 1. Number Adding fractions

    Calculate: 4⁄6 + 1⁄6

    Answer: 5⁄6
  2. 2. Algebra Two-step equations

    Solve: 4x + 13 = 53

    Answer: x = 10
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 5cm and b = 7cm

    Answer: 8.6cm
  4. 4. Ratio Sharing in a ratio

    Divide 230 in the ratio 1:2:2

    Answer: 46, 92 and 92
  5. 5. Statistics Mean

    Calculate the mean of: 48, 24, 38, 29, 48, 50, 39, 38

    Answer: 39.3

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