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Cornerstone · Grades 3–5 Keystones #1 10 April 2012 Skills week 1 of 7
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Five GCSE retrieval questions · 10 April 2012 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 4⁄7 + 2⁄7

    Answer: 6⁄7
  2. 2. Algebra Two-step equations

    Solve: 2x - 16 = 14

    Answer: x = 15
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 12cm and 16cm

    Answer: 20cm
  4. 4. Ratio Sharing in a ratio

    Share 65 in the ratio 1:4

    Answer: 13 and 52
  5. 5. Statistics Mean

    Calculate the mean of: 49, 24, 43, 41, 16, 26, 11, 37. Give your answer to 2 decimal places

    Answer: 30.88

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