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Cornerstone · Grades 3–5 Keystones #1 30 May 2010 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 30 May 2010 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 6⁄7 + 1⁄5

    Answer: 37⁄35
  2. 2. Algebra Two-step equations

    Solve: 5x + 6 = 66

    Answer: x = 12
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 5cm and b = 12cm

    Answer: 13cm
  4. 4. Ratio Sharing in a ratio

    Share 45 in the ratio 1:2

    Answer: 15 and 30
  5. 5. Statistics Mean

    Calculate the mean of: 12, 47, 18, 31, 29, 43

    Answer: 30

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