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Cornerstone · Grades 3–5 Keystones #1 19 April 2015 Skills week 1 of 7
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Five GCSE retrieval questions · 19 April 2015 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 6⁄7 + 1⁄3

    Answer: 25⁄21
  2. 2. Algebra Two-step equations

    Solve: 8x - 14 = 82

    Answer: x = 12
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 6cm and b = 10cm. Give your answer to 2 decimal places

    Answer: 11.66cm
  4. 4. Ratio Sharing in a ratio

    Divide 110 in the ratio 2:2:1

    Answer: 44, 44 and 22
  5. 5. Statistics Mean

    Calculate the mean of: 26, 29, 17, 10, 25, 24. Give your answer to 2 decimal places

    Answer: 21.83

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