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Cornerstone · Grades 3–5 Keystones #1 19 June 2010 Skills week 1 of 7
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Five GCSE retrieval questions · 19 June 2010 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 1⁄3 + 1⁄4

    Answer: 7⁄12
  2. 2. Algebra Two-step equations

    Solve: 3x - 13 = 5

    Answer: x = 6
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 7cm and b = 13cm. Give your answer to 2 decimal places

    Answer: 14.76cm
  4. 4. Ratio Sharing in a ratio

    Share 56 in the ratio 3:4

    Answer: 24 and 32
  5. 5. Statistics Mean

    Find the mean of: 8, 14, 13, 17, 3

    Answer: 11

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