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Cornerstone · Grades 3–5 Keystones #1 31 December 2013 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 31 December 2013 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 3⁄4 + 4⁄6

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

    Solve: 2x + 11 = 25

    Answer: x = 7
  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 208 in the ratio 3:3:2

    Answer: 78, 78 and 52
  5. 5. Statistics Mean

    Find the mean of: 5, 11, 6, 12, 6

    Answer: 8

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