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Cornerstone · Grades 3–5 Keystones #1 22 November 2011 Skills week 1 of 7
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Five GCSE retrieval questions · 22 November 2011 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 2⁄6 + 5⁄8

    Answer: 23⁄24
  2. 2. Algebra Two-step equations

    Solve: 5x - 14 = 36

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

    Calculate the hypotenuse when a = 6cm and b = 15cm. Give your answer to 2 decimal places

    Answer: 16.16cm
  4. 4. Ratio Sharing in a ratio

    Share 30 in the ratio 1:4

    Answer: 6 and 24
  5. 5. Statistics Mean

    Calculate the mean of: 9, 45, 20, 40, 29, 14. Give your answer to 2 decimal places

    Answer: 26.17

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