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Cornerstone · Grades 3–5 Keystones #1 24 August 2011 Skills week 1 of 7
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Five GCSE retrieval questions · 24 August 2011 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 1⁄4 + 2⁄3

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

    Solve: 6x + 10 = 58

    Answer: x = 8
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 12cm and b = 10cm. Give your answer to 2 decimal places

    Answer: 15.62cm
  4. 4. Ratio Sharing in a ratio

    Share 60 in the ratio 1:4

    Answer: 12 and 48
  5. 5. Statistics Mean

    Find the mean of: 15, 6, 20, 19

    Answer: 15

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