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Cornerstone · Grades 3–5 Keystones #1 10 October 2017 Skills week 1 of 7
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Five GCSE retrieval questions · 10 October 2017 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 4⁄11 + 5⁄11

    Answer: 9⁄11
  2. 2. Algebra Two-step equations

    Solve: 8x - 14 = 106

    Answer: x = 15
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 11cm and b = 12cm. Give your answer to 2 decimal places

    Answer: 16.28cm
  4. 4. Ratio Sharing in a ratio

    Share 60 in the ratio 1:2

    Answer: 20 and 40
  5. 5. Statistics Mean

    Calculate the mean of: 42, 37, 39, 20, 21, 35. Give your answer to 2 decimal places

    Answer: 32.33

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