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Cornerstone · Grades 3–5 Keystones #1 23 October 2013 Skills week 1 of 7
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Five GCSE retrieval questions · 23 October 2013 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 3⁄7 + 1⁄7

    Answer: 4⁄7
  2. 2. Algebra Two-step equations

    Solve: 6x - 9 = 63

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

    Calculate the hypotenuse when a = 7cm and b = 7cm. Give your answer to 2 decimal places

    Answer: 9.9cm
  4. 4. Ratio Sharing in a ratio

    Share 56 in the ratio 4:3

    Answer: 32 and 24
  5. 5. Statistics Mean

    Calculate the mean of: 8, 16, 14, 10, 47, 43, 32. Give your answer to 2 decimal places

    Answer: 24.29

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