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

  1. 1. Number Adding fractions

    Calculate: 3⁄7 + 2⁄7

    Answer: 5⁄7
  2. 2. Algebra Two-step equations

    Solve: 4x + 14 = 46

    Answer: x = 8
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 10cm and b = 15cm. Give your answer to 2 decimal places

    Answer: 18.03cm
  4. 4. Ratio Sharing in a ratio

    Share 119 in the ratio 3:4

    Answer: 51 and 68
  5. 5. Statistics Mean

    Calculate the mean of: 47, 33, 35, 50, 13, 13, 16, 37

    Answer: 30.5

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