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Cornerstone · Grades 3–5 Keystones #1 14 November 2013 Skills week 1 of 7
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Five GCSE retrieval questions · 14 November 2013 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 3⁄9 + 3⁄9

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

    Solve: 7x - 13 = 85

    Answer: x = 14
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 12cm and b = 14cm. Give your answer to 2 decimal places

    Answer: 18.44cm
  4. 4. Ratio Sharing in a ratio

    Divide 182 in the ratio 1:4:2

    Answer: 26, 104 and 52
  5. 5. Statistics Mean

    Calculate the mean of: 25, 40, 50, 30, 38, 12, 25. Give your answer to 2 decimal places

    Answer: 31.43

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