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Cornerstone · Grades 3–5 Keystones #1 10 May 2015 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 10 May 2015 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 8⁄11 + 2⁄11

    Answer: 10⁄11
  2. 2. Algebra Two-step equations

    Solve: 3x - 9 = 36

    Answer: x = 15
  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

    Divide 196 in the ratio 2:2:3

    Answer: 56, 56 and 84
  5. 5. Statistics Mean

    Calculate the mean of: 22, 43, 33, 22, 33, 49, 10. Give your answer to 2 decimal places

    Answer: 30.29

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