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Cornerstone · Grades 3–5 Keystones #1 14 August 2011 Skills week 1 of 7
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Five GCSE retrieval questions · 14 August 2011 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 3⁄6 + 1⁄4

    Answer: 3⁄4
  2. 2. Algebra Two-step equations

    Solve: 5x - 10 = 15

    Answer: x = 5
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 9cm and b = 6cm. Give your answer to 2 decimal places

    Answer: 10.82cm
  4. 4. Ratio Sharing in a ratio

    Divide 96 in the ratio 1:4:3

    Answer: 12, 48 and 36
  5. 5. Statistics Mean

    Calculate the mean of: 7, 50, 16, 28, 50, 33, 32. Give your answer to 2 decimal places

    Answer: 30.86

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