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Cornerstone · Grades 3–5 Keystones #1 20 November 2010 Skills week 1 of 7
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Five GCSE retrieval questions · 20 November 2010 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 3⁄6 + 1⁄6

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

    Solve: 7x + 9 = 37

    Answer: x = 4
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 3cm and b = 7cm. Give your answer to 2 decimal places

    Answer: 7.62cm
  4. 4. Ratio Sharing in a ratio

    Share 140 in the ratio 3:4

    Answer: 60 and 80
  5. 5. Statistics Mean

    Find the mean of: 19, 5, 9, 11

    Answer: 11

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