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Cornerstone · Grades 3–5 Keystones #1 31 August 2010 Skills week 1 of 7
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Five GCSE retrieval questions · 31 August 2010 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 3⁄7 + 3⁄4

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

    Solve: 7x + 5 = 89

    Answer: x = 12
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 6cm and b = 11cm. Give your answer to 2 decimal places

    Answer: 12.53cm
  4. 4. Ratio Sharing in a ratio

    Share 52 in the ratio 3:1

    Answer: 39 and 13
  5. 5. Statistics Mean

    Find the mean of: 9, 8, 6, 9

    Answer: 8

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