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Cornerstone · Grades 3–5 Keystones #1 30 June 2016 Skills week 1 of 7
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Five GCSE retrieval questions · 30 June 2016 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 3⁄9 + 5⁄9

    Answer: 8⁄9
  2. 2. Algebra Two-step equations

    Solve: 2x - 14 = 6

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

    Find the hypotenuse of a right triangle with sides 3cm and 4cm

    Answer: 5cm
  4. 4. Ratio Sharing in a ratio

    Divide 108 in the ratio 1:2:3

    Answer: 18, 36 and 54
  5. 5. Statistics Mean

    Calculate the mean of: 9, 15, 12, 8, 18, 34, 48, 32

    Answer: 22

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