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Cornerstone · Grades 3–5 Keystones #1 14 June 2010 Skills week 1 of 7
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Five GCSE retrieval questions · 14 June 2010 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 3⁄4 + 4⁄7

    Answer: 37⁄28
  2. 2. Algebra Two-step equations

    Solve: 2x + 8 = 18

    Answer: x = 5
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 5cm and b = 10cm. Give your answer to 2 decimal places

    Answer: 11.18cm
  4. 4. Ratio Sharing in a ratio

    Share 54 in the ratio 1:2

    Answer: 18 and 36
  5. 5. Statistics Mean

    Calculate the mean of: 46, 28, 8, 13, 6, 9. Give your answer to 2 decimal places

    Answer: 18.33

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