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Cornerstone · Grades 3–5 Keystones #1 7 December 2013 Skills week 1 of 7
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Five GCSE retrieval questions · 7 December 2013 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 4⁄7 + 1⁄7

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

    Solve: 7x + 14 = 70

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

    Calculate the hypotenuse when a = 8cm and b = 12cm. Give your answer to 2 decimal places

    Answer: 14.42cm
  4. 4. Ratio Sharing in a ratio

    Divide 150 in the ratio 1:1:4

    Answer: 25, 25 and 100
  5. 5. Statistics Mean

    Calculate the mean of: 5, 50, 39, 35, 6, 44, 27, 42

    Answer: 31

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