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Cornerstone · Grades 3–5 Keystones #1 8 December 2012 Skills week 1 of 7
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Five GCSE retrieval questions · 8 December 2012 · 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 = 76

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

    Calculate the hypotenuse when a = 10cm and b = 11cm. Give your answer to 2 decimal places

    Answer: 14.87cm
  4. 4. Ratio Sharing in a ratio

    Divide 75 in the ratio 1:3:1

    Answer: 15, 45 and 15
  5. 5. Statistics Mean

    Calculate the mean of: 48, 5, 49, 44, 23, 34. Give your answer to 2 decimal places

    Answer: 33.83

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