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Cornerstone · Grades 3–5 Keystones #1 24 June 2014 Skills week 1 of 7
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Five GCSE retrieval questions · 24 June 2014 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 3⁄7 + 3⁄7

    Answer: 6⁄7
  2. 2. Algebra Two-step equations

    Solve: 7x + 15 = 85

    Answer: x = 10
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 12cm and 35cm

    Answer: 37cm
  4. 4. Ratio Sharing in a ratio

    Share 95 in the ratio 1:4

    Answer: 19 and 76
  5. 5. Statistics Mean

    Calculate the mean of: 21, 29, 16, 7, 26, 50, 34. Give your answer to 2 decimal places

    Answer: 26.14

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