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Cornerstone · Grades 3–5 Keystones #1 22 January 2014 Skills week 1 of 7
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Five GCSE retrieval questions · 22 January 2014 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 9⁄11 + 1⁄11

    Answer: 10⁄11
  2. 2. Algebra Two-step equations

    Solve: 5x + 7 = 62

    Answer: x = 11
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 11cm and b = 15cm. Give your answer to 2 decimal places

    Answer: 18.6cm
  4. 4. Ratio Sharing in a ratio

    Divide 144 in the ratio 3:1:4

    Answer: 54, 18 and 72
  5. 5. Statistics Mean

    Find the mean of: 20, 9, 10

    Answer: 13

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