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Cornerstone · Grades 3–5 Keystones #1 11 September 2010 Skills week 1 of 7
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Five GCSE retrieval questions · 11 September 2010 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 2⁄11 + 3⁄11

    Answer: 5⁄11
  2. 2. Algebra Two-step equations

    Solve: 8x - 18 = 22

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

    Calculate the hypotenuse when a = 5cm and b = 4cm. Give your answer to 2 decimal places

    Answer: 6.4cm
  4. 4. Ratio Sharing in a ratio

    Divide 152 in the ratio 3:3:2

    Answer: 57, 57 and 38
  5. 5. Statistics Mean

    Calculate the mean of: 22, 40, 35, 13, 20, 12, 39. Give your answer to 2 decimal places

    Answer: 25.86

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