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Cornerstone · Grades 3–5 Keystones #1 15 June 2011 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 15 June 2011 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 2⁄3 + 6⁄7

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

    Solve: 5x - 10 = 50

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

    Find the hypotenuse of a right triangle with sides 7cm and 24cm

    Answer: 25cm
  4. 4. Ratio Sharing in a ratio

    Share 60 in the ratio 1:2

    Answer: 20 and 40
  5. 5. Statistics Mean

    Find the mean of: 6, 13, 12, 5

    Answer: 9

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