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Cornerstone · Grades 3–5 Keystones #1 27 December 2016 Skills week 1 of 7
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Five GCSE retrieval questions · 27 December 2016 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 6⁄8 + 4⁄7

    Answer: 37⁄28
  2. 2. Algebra Two-step equations

    Solve: 5x - 8 = 27

    Answer: x = 7
  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 40 in the ratio 2:3

    Answer: 16 and 24
  5. 5. Statistics Mean

    Calculate the mean of: 38, 12, 47, 12, 21, 49, 41. Give your answer to 2 decimal places

    Answer: 31.43

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