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Cornerstone · Grades 3–5 Keystones #1 27 April 2011 Skills week 1 of 7
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Five GCSE retrieval questions · 27 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: 6x + 13 = 55

    Answer: x = 7
  3. 3. Geometry Pythagoras — hypotenuse

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

    Answer: 5.66cm
  4. 4. Ratio Sharing in a ratio

    Divide 210 in the ratio 1:2:2

    Answer: 42, 84 and 84
  5. 5. Statistics Mean

    Find the mean of: 1, 8, 9

    Answer: 6

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