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Cornerstone · Grades 3–5 Keystones #1 30 November 2011 Skills week 1 of 7
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Five GCSE retrieval questions · 30 November 2011 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 6⁄8 + 1⁄8

    Answer: 7⁄8
  2. 2. Algebra Two-step equations

    Solve: 7x - 11 = 31

    Answer: x = 6
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 11cm and b = 8cm. Give your answer to 2 decimal places

    Answer: 13.6cm
  4. 4. Ratio Sharing in a ratio

    Divide 189 in the ratio 1:2:4

    Answer: 27, 54 and 108
  5. 5. Statistics Mean

    Find the mean of: 15, 16, 18, 7

    Answer: 14

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