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Cornerstone · Grades 3–5 Keystones #1 7 October 2013 Skills week 1 of 7
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Five GCSE retrieval questions · 7 October 2013 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 2⁄7 + 3⁄7

    Answer: 5⁄7
  2. 2. Algebra Two-step equations

    Solve: 8x - 8 = 48

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

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

    Answer: 16.97cm
  4. 4. Ratio Sharing in a ratio

    Divide 136 in the ratio 1:4:3

    Answer: 17, 68 and 51
  5. 5. Statistics Mean

    Calculate the mean of: 39, 9, 42, 29, 30, 44, 33, 28

    Answer: 31.75

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