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Cornerstone · Grades 3–5 Keystones #1 16 April 2013 Skills week 1 of 7
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Five GCSE retrieval questions · 16 April 2013 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 4⁄9 + 2⁄9

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

    Solve: 5x + 10 = 45

    Answer: x = 7
  3. 3. Geometry Pythagoras — hypotenuse

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

    Answer: 14.14cm
  4. 4. Ratio Sharing in a ratio

    Divide 161 in the ratio 1:2:4

    Answer: 23, 46 and 92
  5. 5. Statistics Mean

    Calculate the mean of: 28, 8, 39, 36, 35, 33. Give your answer to 2 decimal places

    Answer: 29.83

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