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Cornerstone · Grades 3–5 Keystones #1 14 December 2012 Skills week 1 of 7
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Five GCSE retrieval questions · 14 December 2012 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 3⁄8 + 3⁄7

    Answer: 45⁄56
  2. 2. Algebra Two-step equations

    Solve: 3x - 7 = 35

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

    Calculate the hypotenuse when a = 3cm and b = 13cm. Give your answer to 2 decimal places

    Answer: 13.34cm
  4. 4. Ratio Sharing in a ratio

    Share 65 in the ratio 2:3

    Answer: 26 and 39
  5. 5. Statistics Mean

    Calculate the mean of: 29, 16, 34, 32, 12, 6, 24, 50. Give your answer to 2 decimal places

    Answer: 25.38

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