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Cornerstone · Grades 3–5 Keystones #1 29 April 2012 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 29 April 2012 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 5⁄6 + 3⁄7

    Answer: 53⁄42
  2. 2. Algebra Two-step equations

    Solve: 2x - 13 = 15

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

    Calculate the hypotenuse when a = 12cm and b = 9cm

    Answer: 15cm
  4. 4. Ratio Sharing in a ratio

    Share 55 in the ratio 2:3

    Answer: 22 and 33
  5. 5. Statistics Mean

    Find the mean of: 16, 7, 11, 6, 5

    Answer: 9

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