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Cornerstone · Grades 3–5 Keystones #1 16 December 2012 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 16 December 2012 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 7⁄8 + 5⁄7

    Answer: 89⁄56
  2. 2. Algebra Two-step equations

    Solve: 6x + 12 = 36

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

    Find the hypotenuse of a right triangle with sides 9cm and 40cm

    Answer: 41cm
  4. 4. Ratio Sharing in a ratio

    Share 91 in the ratio 4:3

    Answer: 52 and 39
  5. 5. Statistics Mean

    Find the mean of: 15, 10, 2, 5, 18

    Answer: 10

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