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Cornerstone · Grades 3–5 Keystones #1 8 December 2014 Skills week 1 of 7
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Five GCSE retrieval questions · 8 December 2014 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 2⁄7 + 3⁄7

    Answer: 5⁄7
  2. 2. Algebra Two-step equations

    Solve: 8x - 7 = 41

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

    Calculate the hypotenuse when a = 9cm and b = 9cm. Give your answer to 2 decimal places

    Answer: 12.73cm
  4. 4. Ratio Sharing in a ratio

    Divide 108 in the ratio 2:4:3

    Answer: 24, 48 and 36
  5. 5. Statistics Mean

    Calculate the mean of: 7, 22, 11, 30, 20, 33

    Answer: 20.5

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