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Cornerstone · Grades 3–5 Keystones #1 25 September 2013 Skills week 1 of 7
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Five GCSE retrieval questions · 25 September 2013 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 2⁄7 + 3⁄7

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

    Solve: 4x + 14 = 50

    Answer: x = 9
  3. 3. Geometry Pythagoras — hypotenuse

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

    Answer: 16.97cm
  4. 4. Ratio Sharing in a ratio

    Share 45 in the ratio 4:1

    Answer: 36 and 9
  5. 5. Statistics Mean

    Find the mean of: 9, 9, 9, 13

    Answer: 10

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