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Cornerstone · Grades 3–5 Keystones #1 4 February 2014 Skills week 1 of 7
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Five GCSE retrieval questions · 4 February 2014 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 5⁄12 + 5⁄12

    Answer: 5⁄6
  2. 2. Algebra Two-step equations

    Solve: 4x - 10 = 14

    Answer: x = 6
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 10cm and b = 9cm. Give your answer to 2 decimal places

    Answer: 13.45cm
  4. 4. Ratio Sharing in a ratio

    Divide 126 in the ratio 3:1:3

    Answer: 54, 18 and 54
  5. 5. Statistics Mean

    Calculate the mean of: 27, 25, 39, 41, 33, 47, 49. Give your answer to 2 decimal places

    Answer: 37.29

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