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Cornerstone · Grades 3–5 Keystones #1 28 June 2015 Skills week 1 of 7
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Five GCSE retrieval questions · 28 June 2015 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 3⁄7 + 1⁄7

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

    Solve: 2x + 5 = 21

    Answer: x = 8
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 8cm and b = 5cm. Give your answer to 2 decimal places

    Answer: 9.43cm
  4. 4. Ratio Sharing in a ratio

    Share 36 in the ratio 1:2

    Answer: 12 and 24
  5. 5. Statistics Mean

    Calculate the mean of: 17, 26, 11, 6, 5, 27. Give your answer to 2 decimal places

    Answer: 15.33

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