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Cornerstone · Grades 3–5 Keystones #1 29 June 2015 Skills week 1 of 7
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Five GCSE retrieval questions · 29 June 2015 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 2⁄8 + 1⁄3

    Answer: 7⁄12
  2. 2. Algebra Two-step equations

    Solve: 5x - 17 = 18

    Answer: x = 7
  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 30 in the ratio 1:2

    Answer: 10 and 20
  5. 5. Statistics Mean

    Find the mean of: 16, 4, 13

    Answer: 11

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