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Cornerstone · Grades 3–5 Keystones #1 20 June 2012 Skills week 1 of 7
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Five GCSE retrieval questions · 20 June 2012 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 1⁄10 + 6⁄10

    Answer: 7⁄10
  2. 2. Algebra Two-step equations

    Solve: 5x - 19 = 31

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

    Calculate the hypotenuse when a = 9cm and b = 14cm. Give your answer to 2 decimal places

    Answer: 16.64cm
  4. 4. Ratio Sharing in a ratio

    Divide 150 in the ratio 2:1:2

    Answer: 60, 30 and 60
  5. 5. Statistics Mean

    Find the mean of: 10, 17, 18, 19, 6

    Answer: 14

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