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Cornerstone · Grades 3–5 Keystones #1 25 February 2012 Skills week 1 of 7
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Five GCSE retrieval questions · 25 February 2012 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 1⁄5 + 6⁄7

    Answer: 37⁄35
  2. 2. Algebra Two-step equations

    Solve: 6x - 11 = 43

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

    Find the hypotenuse of a right triangle with sides 6cm and 8cm

    Answer: 10cm
  4. 4. Ratio Sharing in a ratio

    Divide 207 in the ratio 3:4:2

    Answer: 69, 92 and 46
  5. 5. Statistics Mean

    Calculate the mean of: 12, 44, 26, 6, 20, 7, 7. Give your answer to 2 decimal places

    Answer: 17.43

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