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Cornerstone · Grades 3–5 Keystones #1 30 December 2010 Skills week 1 of 7
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Five GCSE retrieval questions · 30 December 2010 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 5⁄8 + 3⁄7

    Answer: 59⁄56
  2. 2. Algebra Two-step equations

    Solve: 7x - 6 = 92

    Answer: x = 14
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 15cm and 20cm

    Answer: 25cm
  4. 4. Ratio Sharing in a ratio

    Share 91 in the ratio 3:4

    Answer: 39 and 52
  5. 5. Statistics Mean

    Find the mean of: 6, 7, 5

    Answer: 6

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