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Cornerstone · Grades 3–5 Keystones #1 30 October 2012 Skills week 1 of 7
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Five GCSE retrieval questions · 30 October 2012 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 4⁄5 + 1⁄6

    Answer: 29⁄30
  2. 2. Algebra Two-step equations

    Solve: 6x + 8 = 44

    Answer: x = 6
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 5cm and 12cm

    Answer: 13cm
  4. 4. Ratio Sharing in a ratio

    Divide 136 in the ratio 1:1:2

    Answer: 34, 34 and 68
  5. 5. Statistics Mean

    Calculate the mean of: 42, 48, 43, 43, 18, 43, 21. Give your answer to 2 decimal places

    Answer: 36.86

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