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Cornerstone · Grades 3–5 Keystones #1 26 February 2012 Skills week 1 of 7
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Five GCSE retrieval questions · 26 February 2012 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 1⁄10 + 4⁄10

    Answer: 1⁄2
  2. 2. Algebra Two-step equations

    Solve: 8x - 12 = 60

    Answer: x = 9
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 8cm and b = 12cm. Give your answer to 2 decimal places

    Answer: 14.42cm
  4. 4. Ratio Sharing in a ratio

    Divide 75 in the ratio 1:2:2

    Answer: 15, 30 and 30
  5. 5. Statistics Mean

    Calculate the mean of: 8, 28, 37, 21, 5, 6

    Answer: 17.5

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