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Cornerstone · Grades 3–5 Keystones #1 10 October 2015 Skills week 1 of 7
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Five GCSE retrieval questions · 10 October 2015 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 5⁄10 + 2⁄10

    Answer: 7⁄10
  2. 2. Algebra Two-step equations

    Solve: 4x - 8 = 36

    Answer: x = 11
  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 70 in the ratio 1:2:2

    Answer: 14, 28 and 28
  5. 5. Statistics Mean

    Find the mean of: 14, 11, 19, 4

    Answer: 12

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