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Cornerstone · Grades 3–5 Keystones #1 30 November 2015 Skills week 1 of 7
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Five GCSE retrieval questions · 30 November 2015 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 1⁄8 + 2⁄7

    Answer: 23⁄56
  2. 2. Algebra Two-step equations

    Solve: 3x + 6 = 39

    Answer: x = 11
  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 119 in the ratio 4:3

    Answer: 68 and 51
  5. 5. Statistics Mean

    Calculate the mean of: 38, 14, 46, 47, 19, 16, 36. Give your answer to 2 decimal places

    Answer: 30.86

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