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Cornerstone · Grades 3–5 Keystones #1 6 September 2013 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 6 September 2013 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 6⁄11 + 3⁄11

    Answer: 9⁄11
  2. 2. Algebra Two-step equations

    Solve: 2x + 12 = 24

    Answer: x = 6
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 12cm and 35cm

    Answer: 37cm
  4. 4. Ratio Sharing in a ratio

    Share 40 in the ratio 2:3

    Answer: 16 and 24
  5. 5. Statistics Mean

    Calculate the mean of: 11, 44, 16, 14, 6, 26, 9

    Answer: 18

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