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Cornerstone · Grades 3–5 Keystones #1 17 June 2013 Skills week 1 of 7
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Five GCSE retrieval questions · 17 June 2013 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 5⁄6 + 2⁄4

    Answer: 4⁄3
  2. 2. Algebra Two-step equations

    Solve: 4x + 15 = 55

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

    Calculate the hypotenuse when a = 11cm and b = 6cm. Give your answer to 2 decimal places

    Answer: 12.53cm
  4. 4. Ratio Sharing in a ratio

    Divide 128 in the ratio 3:1:4

    Answer: 48, 16 and 64
  5. 5. Statistics Mean

    Find the mean of: 6, 20, 16

    Answer: 14

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