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Cornerstone · Grades 3–5 Keystones #1 15 January 2014 Skills week 1 of 7
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Five GCSE retrieval questions · 15 January 2014 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 5⁄7 + 1⁄7

    Answer: 6⁄7
  2. 2. Algebra Two-step equations

    Solve: 4x - 12 = 16

    Answer: x = 7
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 6cm and b = 12cm. Give your answer to 2 decimal places

    Answer: 13.42cm
  4. 4. Ratio Sharing in a ratio

    Divide 168 in the ratio 3:1:2

    Answer: 84, 28 and 56
  5. 5. Statistics Mean

    Find the mean of: 3, 2, 9, 14

    Answer: 7

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