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Cornerstone · Grades 3–5 Keystones #1 28 November 2017 Skills week 1 of 7
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Five GCSE retrieval questions · 28 November 2017 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 8⁄11 + 1⁄11

    Answer: 9⁄11
  2. 2. Algebra Two-step equations

    Solve: 6x - 11 = 31

    Answer: x = 7
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 10cm and b = 14cm. Give your answer to 2 decimal places

    Answer: 17.2cm
  4. 4. Ratio Sharing in a ratio

    Divide 66 in the ratio 2:1:3

    Answer: 22, 11 and 33
  5. 5. Statistics Mean

    Calculate the mean of: 6, 22, 30, 14, 37, 13, 13, 9

    Answer: 18

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