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Cornerstone · Grades 3–5 Keystones #1 25 May 2013 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 25 May 2013 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 1⁄7 + 3⁄6

    Answer: 9⁄14
  2. 2. Algebra Two-step equations

    Solve: 4x + 15 = 43

    Answer: x = 7
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 12cm and 35cm

    Answer: 37cm
  4. 4. Ratio Sharing in a ratio

    Divide 203 in the ratio 3:1:3

    Answer: 87, 29 and 87
  5. 5. Statistics Mean

    Find the mean of: 13, 9, 2, 9, 17

    Answer: 10

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