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Cornerstone · Grades 3–5 Keystones #1 28 July 2014 Skills week 1 of 7
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Five GCSE retrieval questions · 28 July 2014 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 4⁄7 + 1⁄4

    Answer: 23⁄28
  2. 2. Algebra Two-step equations

    Solve: 8x - 20 = 52

    Answer: x = 9
  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 91 in the ratio 2:2:3

    Answer: 26, 26 and 39
  5. 5. Statistics Mean

    Calculate the mean of: 46, 28, 13, 27, 14, 5, 27, 20

    Answer: 22.5

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