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Cornerstone · Grades 3–5 Keystones #1 14 June 2011 Skills week 1 of 7
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Five GCSE retrieval questions · 14 June 2011 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 3⁄12 + 3⁄12

    Answer: 1⁄2
  2. 2. Algebra Two-step equations

    Solve: 3x + 9 = 36

    Answer: x = 9
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 11cm and b = 4cm. Give your answer to 2 decimal places

    Answer: 11.7cm
  4. 4. Ratio Sharing in a ratio

    Share 95 in the ratio 1:4

    Answer: 19 and 76
  5. 5. Statistics Mean

    Calculate the mean of: 31, 16, 50, 24, 46, 15. Give your answer to 2 decimal places

    Answer: 30.33

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