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Cornerstone · Grades 3–5 Keystones #1 28 July 2016 Skills week 1 of 7
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Five GCSE retrieval questions · 28 July 2016 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 1⁄6 + 1⁄4

    Answer: 5⁄12
  2. 2. Algebra Two-step equations

    Solve: 4x - 9 = 27

    Answer: x = 9
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 8cm and 15cm

    Answer: 17cm
  4. 4. Ratio Sharing in a ratio

    Share 80 in the ratio 1:3

    Answer: 20 and 60
  5. 5. Statistics Mean

    Find the mean of: 3, 11, 22

    Answer: 12

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