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Cornerstone · Grades 3–5 Keystones #1 16 April 2012 Skills week 1 of 7
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Five GCSE retrieval questions · 16 April 2012 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 1⁄3 + 2⁄5

    Answer: 11⁄15
  2. 2. Algebra Two-step equations

    Solve: 3x + 8 = 41

    Answer: x = 11
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 7cm and b = 7cm. Give your answer to 2 decimal places

    Answer: 9.9cm
  4. 4. Ratio Sharing in a ratio

    Divide 216 in the ratio 2:3:3

    Answer: 54, 81 and 81
  5. 5. Statistics Mean

    Calculate the mean of: 31, 14, 18, 25, 45, 34, 37, 24

    Answer: 28.5

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