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Cornerstone · Grades 3–5 Keystones #1 17 April 2013 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 17 April 2013 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 4⁄6 + 6⁄7

    Answer: 32⁄21
  2. 2. Algebra Two-step equations

    Solve: 5x - 17 = 33

    Answer: x = 10
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 5cm and 12cm

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

    Divide 40 in the ratio 1:2:1

    Answer: 10, 20 and 10
  5. 5. Statistics Mean

    Find the mean of: 12, 4, 8, 12

    Answer: 9

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