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Cornerstone · Grades 3–5 Keystones #1 14 June 2014 Skills week 1 of 7
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Five GCSE retrieval questions · 14 June 2014 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 5⁄10 + 4⁄10

    Answer: 9⁄10
  2. 2. Algebra Two-step equations

    Solve: 3x - 5 = 31

    Answer: x = 12
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 12cm and 16cm

    Answer: 20cm
  4. 4. Ratio Sharing in a ratio

    Divide 72 in the ratio 2:1:3

    Answer: 24, 12 and 36
  5. 5. Statistics Mean

    Find the mean of: 8, 15, 12, 12, 18

    Answer: 13

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