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Cornerstone · Grades 3–5 Keystones #1 15 July 2017 Skills week 1 of 7
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Five GCSE retrieval questions · 15 July 2017 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 5⁄9 + 1⁄9

    Answer: 2⁄3
  2. 2. Algebra Two-step equations

    Solve: 3x - 13 = 29

    Answer: x = 14
  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 66 in the ratio 3:1:2

    Answer: 33, 11 and 22
  5. 5. Statistics Mean

    Find the mean of: 10, 10, 19, 12, 24

    Answer: 15

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