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Cornerstone · Grades 3–5 Keystones #1 29 June 2011 Skills week 1 of 7
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Five GCSE retrieval questions · 29 June 2011 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 1⁄7 + 2⁄7

    Answer: 3⁄7
  2. 2. Algebra Two-step equations

    Solve: 6x + 3 = 57

    Answer: x = 9
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 3cm and b = 14cm. Give your answer to 2 decimal places

    Answer: 14.32cm
  4. 4. Ratio Sharing in a ratio

    Divide 189 in the ratio 2:4:3

    Answer: 42, 84 and 63
  5. 5. Statistics Mean

    Calculate the mean of: 10, 24, 21, 8, 25, 15, 7. Give your answer to 2 decimal places

    Answer: 15.71

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