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Cornerstone · Grades 3–5 Keystones #1 27 December 2012 Skills week 1 of 7
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Five GCSE retrieval questions · 27 December 2012 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 2⁄10 + 4⁄10

    Answer: 3⁄5
  2. 2. Algebra Two-step equations

    Solve: 2x + 11 = 21

    Answer: x = 5
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 10cm and b = 14cm. Give your answer to 2 decimal places

    Answer: 17.2cm
  4. 4. Ratio Sharing in a ratio

    Divide 154 in the ratio 1:2:4

    Answer: 22, 44 and 88
  5. 5. Statistics Mean

    Find the mean of: 18, 15, 6

    Answer: 13

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