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Cornerstone · Grades 3–5 Keystones #1 10 February 2012 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 10 February 2012 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 3⁄4 + 2⁄3

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

    Solve: 3x - 6 = 18

    Answer: x = 8
  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

    Divide 210 in the ratio 4:2:1

    Answer: 120, 60 and 30
  5. 5. Statistics Mean

    Find the mean of: 10, 4, 7

    Answer: 7

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