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Cornerstone · Grades 3–5 Keystones #1 25 November 2010 Skills week 1 of 7
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Five GCSE retrieval questions · 25 November 2010 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 7⁄10 + 2⁄10

    Answer: 9⁄10
  2. 2. Algebra Two-step equations

    Solve: 2x - 17 = 11

    Answer: x = 14
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 10cm and b = 15cm. Give your answer to 2 decimal places

    Answer: 18.03cm
  4. 4. Ratio Sharing in a ratio

    Divide 104 in the ratio 2:1:1

    Answer: 52, 26 and 26
  5. 5. Statistics Mean

    Find the mean of: 8, 6, 25, 3, 3

    Answer: 9

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