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Cornerstone · Grades 3–5 Keystones #1 20 April 2011 Skills week 1 of 7
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Five GCSE retrieval questions · 20 April 2011 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 3⁄7 + 3⁄4

    Answer: 33⁄28
  2. 2. Algebra Two-step equations

    Solve: 2x + 14 = 24

    Answer: x = 5
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 4cm and b = 11cm. Give your answer to 2 decimal places

    Answer: 11.7cm
  4. 4. Ratio Sharing in a ratio

    Share 112 in the ratio 4:3

    Answer: 64 and 48
  5. 5. Statistics Mean

    Calculate the mean of: 23, 28, 26, 25, 39, 13, 31. Give your answer to 2 decimal places

    Answer: 26.43

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