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Cornerstone · Grades 3–5 Keystones #1 7 December 2012 Skills week 1 of 7
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Five GCSE retrieval questions · 7 December 2012 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 2⁄6 + 1⁄7

    Answer: 10⁄21
  2. 2. Algebra Two-step equations

    Solve: 7x + 13 = 34

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

    Calculate the hypotenuse when a = 11cm and b = 5cm. Give your answer to 2 decimal places

    Answer: 12.08cm
  4. 4. Ratio Sharing in a ratio

    Divide 154 in the ratio 2:1:4

    Answer: 44, 22 and 88
  5. 5. Statistics Mean

    Calculate the mean of: 14, 39, 11, 7, 41, 16, 14. Give your answer to 2 decimal places

    Answer: 20.29

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