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Cornerstone · Grades 3–5 Keystones #1 27 May 2010 Skills week 1 of 7
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Five GCSE retrieval questions · 27 May 2010 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 10⁄12 + 1⁄12

    Answer: 11⁄12
  2. 2. Algebra Two-step equations

    Solve: 8x - 6 = 114

    Answer: x = 15
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 3cm and b = 12cm. Give your answer to 2 decimal places

    Answer: 12.37cm
  4. 4. Ratio Sharing in a ratio

    Share 75 in the ratio 3:2

    Answer: 45 and 30
  5. 5. Statistics Mean

    Find the mean of: 11, 2, 4, 15

    Answer: 8

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