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Cornerstone · Grades 3–5 Keystones #1 27 April 2013 Skills week 1 of 7
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Five GCSE retrieval questions · 27 April 2013 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 1⁄8 + 4⁄7

    Answer: 39⁄56
  2. 2. Algebra Two-step equations

    Solve: 4x + 10 = 38

    Answer: x = 7
  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 77 in the ratio 3:4

    Answer: 33 and 44
  5. 5. Statistics Mean

    Calculate the mean of: 40, 34, 39, 42, 23, 45, 36, 8. Give your answer to 2 decimal places

    Answer: 33.38

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