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Cornerstone · Grades 3–5 Keystones #1 10 September 2013 Skills week 1 of 7
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Five GCSE retrieval questions · 10 September 2013 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 3⁄9 + 1⁄9

    Answer: 4⁄9
  2. 2. Algebra Two-step equations

    Solve: 7x + 5 = 26

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

    Calculate the hypotenuse when a = 4cm and b = 7cm. Give your answer to 2 decimal places

    Answer: 8.06cm
  4. 4. Ratio Sharing in a ratio

    Share 35 in the ratio 1:4

    Answer: 7 and 28
  5. 5. Statistics Mean

    Calculate the mean of: 33, 16, 27, 47, 24, 6, 9. Give your answer to 2 decimal places

    Answer: 23.14

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