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Cornerstone · Grades 3–5 Keystones #1 9 June 2012 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 9 June 2012 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 6⁄9 + 2⁄9

    Answer: 8⁄9
  2. 2. Algebra Two-step equations

    Solve: 2x + 12 = 30

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

    Find the hypotenuse of a right triangle with sides 9cm and 40cm

    Answer: 41cm
  4. 4. Ratio Sharing in a ratio

    Share 24 in the ratio 2:1

    Answer: 16 and 8
  5. 5. Statistics Mean

    Calculate the mean of: 50, 24, 32, 17, 36, 18

    Answer: 29.5

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