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Cornerstone · Grades 3–5 Keystones #1 26 November 2013 Skills week 1 of 7
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Five GCSE retrieval questions · 26 November 2013 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 3⁄6 + 2⁄6

    Answer: 5⁄6
  2. 2. Algebra Two-step equations

    Solve: 7x - 20 = 36

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

    Calculate the hypotenuse when a = 9cm and b = 8cm. Give your answer to 2 decimal places

    Answer: 12.04cm
  4. 4. Ratio Sharing in a ratio

    Share 48 in the ratio 2:1

    Answer: 32 and 16
  5. 5. Statistics Mean

    Calculate the mean of: 48, 32, 42, 36, 12, 48, 29. Give your answer to 2 decimal places

    Answer: 35.29

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