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Cornerstone · Grades 3–5 Keystones #1 17 October 2011 Skills week 1 of 7
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Five GCSE retrieval questions · 17 October 2011 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 2⁄6 + 7⁄8

    Answer: 29⁄24
  2. 2. Algebra Two-step equations

    Solve: 2x + 9 = 29

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

    Calculate the hypotenuse when a = 8cm and b = 7cm. Give your answer to 2 decimal places

    Answer: 10.63cm
  4. 4. Ratio Sharing in a ratio

    Divide 182 in the ratio 2:3:2

    Answer: 52, 78 and 52
  5. 5. Statistics Mean

    Find the mean of: 8, 15, 17, 8

    Answer: 12

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