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

Five GCSE retrieval questions · 7 May 2012 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 2⁄3 + 3⁄4

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

    Solve: 3x - 13 = 20

    Answer: x = 11
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 15cm and 36cm

    Answer: 39cm
  4. 4. Ratio Sharing in a ratio

    Divide 91 in the ratio 4:1:2

    Answer: 52, 13 and 26
  5. 5. Statistics Mean

    Find the mean of: 13, 9, 2, 12

    Answer: 9

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