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Cornerstone · Grades 3–5 Keystones #1 27 February 2014 Skills week 1 of 7
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Five GCSE retrieval questions · 27 February 2014 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 6⁄8 + 1⁄8

    Answer: 7⁄8
  2. 2. Algebra Two-step equations

    Solve: 7x - 10 = 95

    Answer: x = 15
  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 128 in the ratio 1:2:1

    Answer: 32, 64 and 32
  5. 5. Statistics Mean

    Find the mean of: 19, 18, 5

    Answer: 14

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