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Cornerstone · Grades 3–5 Keystones #1 22 September 2012 Skills week 1 of 7
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Five GCSE retrieval questions · 22 September 2012 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 5⁄7 + 1⁄8

    Answer: 47⁄56
  2. 2. Algebra Two-step equations

    Solve: 7x + 6 = 69

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

    Calculate the hypotenuse when a = 8cm and b = 8cm. Give your answer to 2 decimal places

    Answer: 11.31cm
  4. 4. Ratio Sharing in a ratio

    Divide 147 in the ratio 2:1:4

    Answer: 42, 21 and 84
  5. 5. Statistics Mean

    Calculate the mean of: 36, 43, 32, 25, 35, 48, 36, 29

    Answer: 35.5

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