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Cornerstone · Grades 3–5 Keystones #1 10 September 2014 Skills week 1 of 7
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Five GCSE retrieval questions · 10 September 2014 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 7⁄11 + 3⁄11

    Answer: 10⁄11
  2. 2. Algebra Two-step equations

    Solve: 6x - 6 = 24

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

    Calculate the hypotenuse when a = 6cm and b = 7cm. Give your answer to 2 decimal places

    Answer: 9.22cm
  4. 4. Ratio Sharing in a ratio

    Share 80 in the ratio 4:1

    Answer: 64 and 16
  5. 5. Statistics Mean

    Calculate the mean of: 39, 14, 22, 16, 28, 30, 43. Give your answer to 2 decimal places

    Answer: 27.43

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