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Cornerstone · Grades 3–5 Keystones #1 6 November 2012 Skills week 1 of 7
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Five GCSE retrieval questions · 6 November 2012 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 4⁄10 + 4⁄10

    Answer: 4⁄5
  2. 2. Algebra Two-step equations

    Solve: 2x - 8 = 6

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

    Calculate the hypotenuse when a = 12cm and b = 14cm. Give your answer to 2 decimal places

    Answer: 18.44cm
  4. 4. Ratio Sharing in a ratio

    Share 18 in the ratio 1:2

    Answer: 6 and 12
  5. 5. Statistics Mean

    Find the mean of: 5, 2, 7, 9, 17

    Answer: 8

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