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Cornerstone · Grades 3–5 Keystones #1 28 October 2011 Skills week 1 of 7
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Five GCSE retrieval questions · 28 October 2011 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 4⁄5 + 6⁄7

    Answer: 58⁄35
  2. 2. Algebra Two-step equations

    Solve: 8x - 5 = 51

    Answer: x = 7
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 9cm and b = 14cm. Give your answer to 2 decimal places

    Answer: 16.64cm
  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: 16, 6, 33, 44, 13, 22. Give your answer to 2 decimal places

    Answer: 22.33

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