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Cornerstone · Grades 3–5 Keystones #1 23 February 2015 Skills week 1 of 7
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Five GCSE retrieval questions · 23 February 2015 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 2⁄9 + 6⁄9

    Answer: 8⁄9
  2. 2. Algebra Two-step equations

    Solve: 7x - 12 = 23

    Answer: x = 5
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 7cm and b = 13cm. Give your answer to 2 decimal places

    Answer: 14.76cm
  4. 4. Ratio Sharing in a ratio

    Share 56 in the ratio 1:3

    Answer: 14 and 42
  5. 5. Statistics Mean

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

    Answer: 32.33

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