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Cornerstone · Grades 3–5 Keystones #1 19 June 2014 Skills week 1 of 7
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Five GCSE retrieval questions · 19 June 2014 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 1⁄7 + 3⁄7

    Answer: 4⁄7
  2. 2. Algebra Two-step equations

    Solve: 6x + 3 = 45

    Answer: x = 7
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 11cm and b = 11cm. Give your answer to 2 decimal places

    Answer: 15.56cm
  4. 4. Ratio Sharing in a ratio

    Divide 144 in the ratio 1:4:1

    Answer: 24, 96 and 24
  5. 5. Statistics Mean

    Calculate the mean of: 38, 13, 27, 15, 21, 25. Give your answer to 2 decimal places

    Answer: 23.17

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