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Cornerstone · Grades 3–5 Keystones #1 27 August 2011 Skills week 1 of 7
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Five GCSE retrieval questions · 27 August 2011 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 1⁄8 + 4⁄8

    Answer: 5⁄8
  2. 2. Algebra Two-step equations

    Solve: 7x + 4 = 74

    Answer: x = 10
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 5cm and 12cm

    Answer: 13cm
  4. 4. Ratio Sharing in a ratio

    Share 90 in the ratio 2:3

    Answer: 36 and 54
  5. 5. Statistics Mean

    Find the mean of: 3, 8, 5, 11, 18

    Answer: 9

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