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Cornerstone · Grades 3–5 Keystones #1 17 October 2012 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 17 October 2012 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 1⁄6 + 3⁄6

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

    Solve: 2x + 9 = 33

    Answer: x = 12
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 9cm and 12cm

    Answer: 15cm
  4. 4. Ratio Sharing in a ratio

    Share 32 in the ratio 3:1

    Answer: 24 and 8
  5. 5. Statistics Mean

    Calculate the mean of: 7, 22, 11, 20, 24, 12

    Answer: 16

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