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

  1. 1. Number Adding fractions

    Add: 5⁄7 + 3⁄6

    Answer: 17⁄14
  2. 2. Algebra Two-step equations

    Solve: 4x - 10 = 46

    Answer: x = 14
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 8cm and b = 4cm. Give your answer to 2 decimal places

    Answer: 8.94cm
  4. 4. Ratio Sharing in a ratio

    Share 80 in the ratio 1:4

    Answer: 16 and 64
  5. 5. Statistics Mean

    Calculate the mean of: 36, 46, 38, 40, 13, 44. Give your answer to 2 decimal places

    Answer: 36.17

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