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Cornerstone · Grades 3–5 Keystones #1 27 April 2010 Skills week 1 of 7
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Five GCSE retrieval questions · 27 April 2010 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 1⁄6 + 1⁄6

    Answer: 1⁄3
  2. 2. Algebra Two-step equations

    Solve: 6x + 10 = 64

    Answer: x = 9
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 6cm and b = 14cm. Give your answer to 2 decimal places

    Answer: 15.23cm
  4. 4. Ratio Sharing in a ratio

    Divide 40 in the ratio 2:1:1

    Answer: 20, 10 and 10
  5. 5. Statistics Mean

    Find the mean of: 8, 2, 12, 6

    Answer: 7

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