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Cornerstone · Grades 3–5 Keystones #1 12 January 2012 Skills week 1 of 7
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Five GCSE retrieval questions · 12 January 2012 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 6⁄7 + 2⁄4

    Answer: 19⁄14
  2. 2. Algebra Two-step equations

    Solve: 2x + 7 = 17

    Answer: x = 5
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 12cm and b = 15cm. Give your answer to 2 decimal places

    Answer: 19.21cm
  4. 4. Ratio Sharing in a ratio

    Share 84 in the ratio 4:3

    Answer: 48 and 36
  5. 5. Statistics Mean

    Calculate the mean of: 37, 47, 26, 19, 39, 50. Give your answer to 2 decimal places

    Answer: 36.33

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