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Cornerstone · Grades 3–5 Keystones #1 14 November 2012 Skills week 1 of 7
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Five GCSE retrieval questions · 14 November 2012 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 4⁄5 + 2⁄8

    Answer: 21⁄20
  2. 2. Algebra Two-step equations

    Solve: 4x - 12 = 16

    Answer: x = 7
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 5cm and b = 13cm. Give your answer to 2 decimal places

    Answer: 13.93cm
  4. 4. Ratio Sharing in a ratio

    Divide 108 in the ratio 3:2:4

    Answer: 36, 24 and 48
  5. 5. Statistics Mean

    Calculate the mean of: 45, 31, 28, 42, 46, 45, 14, 48. Give your answer to 2 decimal places

    Answer: 37.38

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