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Cornerstone · Grades 3–5 Keystones #1 14 November 2016 Skills week 1 of 7
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Five GCSE retrieval questions · 14 November 2016 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 1⁄7 + 1⁄7

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

    Solve: 2x + 4 = 22

    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 85 in the ratio 1:4

    Answer: 17 and 68
  5. 5. Statistics Mean

    Find the mean of: 7, 18, 17, 8, 20

    Answer: 14

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