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Cornerstone · Grades 3–5 Keystones #1 14 December 2014 Skills week 1 of 7
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Five GCSE retrieval questions · 14 December 2014 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 2⁄11 + 1⁄11

    Answer: 3⁄11
  2. 2. Algebra Two-step equations

    Solve: 7x + 10 = 87

    Answer: x = 11
  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 108 in the ratio 1:2

    Answer: 36 and 72
  5. 5. Statistics Mean

    Calculate the mean of: 43, 12, 38, 27, 26, 29, 8. Give your answer to 2 decimal places

    Answer: 26.14

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