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Cornerstone · Grades 3–5 Keystones #1 13 June 2012 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 13 June 2012 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 2⁄3 + 3⁄4

    Answer: 17⁄12
  2. 2. Algebra Two-step equations

    Solve: 5x + 11 = 46

    Answer: x = 7
  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 65 in the ratio 1:4

    Answer: 13 and 52
  5. 5. Statistics Mean

    Calculate the mean of: 45, 5, 31, 23, 37, 21

    Answer: 27

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