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Cornerstone · Grades 3–5 Keystones #1 29 April 2011 Skills week 1 of 7
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Five GCSE retrieval questions · 29 April 2011 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 2⁄10 + 5⁄10

    Answer: 7⁄10
  2. 2. Algebra Two-step equations

    Solve: 8x - 8 = 96

    Answer: x = 13
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 4cm and b = 15cm. Give your answer to 2 decimal places

    Answer: 15.52cm
  4. 4. Ratio Sharing in a ratio

    Divide 135 in the ratio 2:4:3

    Answer: 30, 60 and 45
  5. 5. Statistics Mean

    Calculate the mean of: 9, 26, 9, 22, 9, 34, 43. Give your answer to 2 decimal places

    Answer: 21.71

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