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Cornerstone · Grades 3–5 Keystones #1 31 July 2014 Skills week 1 of 7
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Five GCSE retrieval questions · 31 July 2014 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 4⁄5 + 4⁄6

    Answer: 22⁄15
  2. 2. Algebra Two-step equations

    Solve: 7x - 7 = 63

    Answer: x = 10
  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 140 in the ratio 2:2:1

    Answer: 56, 56 and 28
  5. 5. Statistics Mean

    Calculate the mean of: 11, 44, 22, 37, 27, 42, 24, 14. Give your answer to 2 decimal places

    Answer: 27.63

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