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Cornerstone · Grades 3–5 Keystones #1 27 February 2012 Skills week 1 of 7
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Five GCSE retrieval questions · 27 February 2012 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 1⁄3 + 1⁄6

    Answer: 1⁄2
  2. 2. Algebra Two-step equations

    Solve: 2x + 14 = 34

    Answer: x = 10
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 5cm and b = 9cm. Give your answer to 2 decimal places

    Answer: 10.3cm
  4. 4. Ratio Sharing in a ratio

    Divide 168 in the ratio 2:3:1

    Answer: 56, 84 and 28
  5. 5. Statistics Mean

    Find the mean of: 4, 4, 7

    Answer: 5

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