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Cornerstone · Grades 3–5 Keystones #1 23 October 2014 Skills week 1 of 7
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Five GCSE retrieval questions · 23 October 2014 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 5⁄10 + 4⁄10

    Answer: 9⁄10
  2. 2. Algebra Two-step equations

    Solve: 4x + 7 = 31

    Answer: x = 6
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 7cm and b = 11cm. Give your answer to 2 decimal places

    Answer: 13.04cm
  4. 4. Ratio Sharing in a ratio

    Share 42 in the ratio 1:2

    Answer: 14 and 28
  5. 5. Statistics Mean

    Calculate the mean of: 14, 25, 37, 33, 22, 43, 11. Give your answer to 2 decimal places

    Answer: 26.43

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