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Cornerstone · Grades 3–5 Keystones #1 15 November 2012 Skills week 1 of 7
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Five GCSE retrieval questions · 15 November 2012 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 7⁄11 + 1⁄11

    Answer: 8⁄11
  2. 2. Algebra Two-step equations

    Solve: 2x + 13 = 19

    Answer: x = 3
  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 88 in the ratio 1:2:1

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

    Find the mean of: 6, 24, 16, 10

    Answer: 14

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