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Cornerstone · Grades 3–5 Keystones #1 28 December 2012 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 28 December 2012 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 3⁄6 + 2⁄6

    Answer: 5⁄6
  2. 2. Algebra Two-step equations

    Solve: 7x + 14 = 42

    Answer: x = 4
  3. 3. Geometry Pythagoras — hypotenuse

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

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

    Divide 108 in the ratio 4:2:3

    Answer: 48, 24 and 36
  5. 5. Statistics Mean

    Find the mean of: 16, 9, 14

    Answer: 13

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