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Cornerstone · Grades 3–5 Keystones #1 27 September 2014 Skills week 1 of 7
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Five GCSE retrieval questions · 27 September 2014 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 1⁄10 + 3⁄10

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

    Solve: 6x + 11 = 71

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

    Calculate the hypotenuse when a = 8cm and b = 9cm. Give your answer to 2 decimal places

    Answer: 12.04cm
  4. 4. Ratio Sharing in a ratio

    Divide 102 in the ratio 3:1:2

    Answer: 51, 17 and 34
  5. 5. Statistics Mean

    Calculate the mean of: 44, 17, 30, 20, 18, 5. Give your answer to 2 decimal places

    Answer: 22.33

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