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Cornerstone · Grades 3–5 Keystones #1 16 December 2011 Skills week 1 of 7
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Five GCSE retrieval questions · 16 December 2011 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 1⁄8 + 6⁄8

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

    Solve: 4x + 3 = 27

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

    Calculate the hypotenuse when a = 10cm and b = 13cm. Give your answer to 2 decimal places

    Answer: 16.4cm
  4. 4. Ratio Sharing in a ratio

    Divide 162 in the ratio 2:1:3

    Answer: 54, 27 and 81
  5. 5. Statistics Mean

    Calculate the mean of: 14, 30, 23, 13, 14, 21, 14. Give your answer to 2 decimal places

    Answer: 18.43

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