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Cornerstone · Grades 3–5 Keystones #1 15 March 2012 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 15 March 2012 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 3⁄6 + 2⁄7

    Answer: 11⁄14
  2. 2. Algebra Two-step equations

    Solve: 7x - 17 = 18

    Answer: x = 5
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 9cm and 40cm

    Answer: 41cm
  4. 4. Ratio Sharing in a ratio

    Divide 154 in the ratio 2:1:4

    Answer: 44, 22 and 88
  5. 5. Statistics Mean

    Find the mean of: 25, 10, 4, 3, 18

    Answer: 12

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