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Cornerstone · Grades 3–5 Keystones #1 6 August 2014 Skills week 1 of 7
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Five GCSE retrieval questions · 6 August 2014 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 3⁄5 + 1⁄5

    Answer: 4⁄5
  2. 2. Algebra Two-step equations

    Solve: 4x + 5 = 41

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

    Find the hypotenuse of a right triangle with sides 9cm and 40cm

    Answer: 41cm
  4. 4. Ratio Sharing in a ratio

    Divide 108 in the ratio 3:1:2

    Answer: 54, 18 and 36
  5. 5. Statistics Mean

    Calculate the mean of: 6, 35, 22, 22, 8, 44. Give your answer to 2 decimal places

    Answer: 22.83

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