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Cornerstone · Grades 3–5 Keystones #1 30 April 2011 Skills week 1 of 7
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Five GCSE retrieval questions · 30 April 2011 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 1⁄8 + 3⁄8

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

    Solve: 5x - 14 = 61

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

    Calculate the hypotenuse when a = 8cm and b = 10cm. Give your answer to 2 decimal places

    Answer: 12.81cm
  4. 4. Ratio Sharing in a ratio

    Divide 270 in the ratio 3:4:3

    Answer: 81, 108 and 81
  5. 5. Statistics Mean

    Calculate the mean of: 39, 44, 27, 11, 34, 22, 37, 30

    Answer: 30.5

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