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Cornerstone · Grades 3–5 Keystones #1 16 July 2011 Skills week 1 of 7
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Five GCSE retrieval questions · 16 July 2011 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 3⁄6 + 2⁄6

    Answer: 5⁄6
  2. 2. Algebra Two-step equations

    Solve: 7x + 10 = 87

    Answer: x = 11
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 7cm and b = 15cm. Give your answer to 2 decimal places

    Answer: 16.55cm
  4. 4. Ratio Sharing in a ratio

    Divide 180 in the ratio 4:1:1

    Answer: 120, 30 and 30
  5. 5. Statistics Mean

    Find the mean of: 3, 15, 12, 14

    Answer: 11

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