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Cornerstone · Grades 3–5 Keystones #1 12 August 2013 Skills week 1 of 7
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Five GCSE retrieval questions · 12 August 2013 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 3⁄9 + 2⁄9

    Answer: 5⁄9
  2. 2. Algebra Two-step equations

    Solve: 7x + 15 = 85

    Answer: x = 10
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 10cm and b = 7cm. Give your answer to 2 decimal places

    Answer: 12.21cm
  4. 4. Ratio Sharing in a ratio

    Divide 90 in the ratio 4:2:3

    Answer: 40, 20 and 30
  5. 5. Statistics Mean

    Find the mean of: 6, 18, 12

    Answer: 12

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