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Cornerstone · Grades 3–5 Keystones #1 9 February 2012 Skills week 1 of 7
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Five GCSE retrieval questions · 9 February 2012 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 2⁄6 + 2⁄3

    Answer: 1⁄1
  2. 2. Algebra Two-step equations

    Solve: 3x - 14 = 13

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

    Calculate the hypotenuse when a = 9cm and b = 15cm. Give your answer to 2 decimal places

    Answer: 17.49cm
  4. 4. Ratio Sharing in a ratio

    Divide 80 in the ratio 2:1:1

    Answer: 40, 20 and 20
  5. 5. Statistics Mean

    Find the mean of: 17, 8, 2

    Answer: 9

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