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Cornerstone · Grades 3–5 Keystones #1 13 June 2011 Skills week 1 of 7
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Five GCSE retrieval questions · 13 June 2011 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 3⁄5 + 1⁄5

    Answer: 4⁄5
  2. 2. Algebra Two-step equations

    Solve: 4x + 12 = 56

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

    Calculate the hypotenuse when a = 9cm and b = 14cm. Give your answer to 2 decimal places

    Answer: 16.64cm
  4. 4. Ratio Sharing in a ratio

    Divide 120 in the ratio 3:3:2

    Answer: 45, 45 and 30
  5. 5. Statistics Mean

    Find the mean of: 16, 9, 5, 5, 5

    Answer: 8

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