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Cornerstone · Grades 3–5 Keystones #1 19 December 2011 Skills week 1 of 7
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Five GCSE retrieval questions · 19 December 2011 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 3⁄9 + 4⁄9

    Answer: 7⁄9
  2. 2. Algebra Two-step equations

    Solve: 5x + 11 = 36

    Answer: x = 5
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 11cm and b = 4cm. Give your answer to 2 decimal places

    Answer: 11.7cm
  4. 4. Ratio Sharing in a ratio

    Divide 150 in the ratio 1:4:1

    Answer: 25, 100 and 25
  5. 5. Statistics Mean

    Calculate the mean of: 41, 41, 40, 41, 5, 43, 6, 9

    Answer: 28.25

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