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Cornerstone · Grades 3–5 Keystones #1 24 June 2011 Skills week 1 of 7
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Five GCSE retrieval questions · 24 June 2011 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 6⁄10 + 2⁄10

    Answer: 4⁄5
  2. 2. Algebra Two-step equations

    Solve: 7x - 18 = 24

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

    Calculate the hypotenuse when a = 10cm and b = 5cm. Give your answer to 2 decimal places

    Answer: 11.18cm
  4. 4. Ratio Sharing in a ratio

    Divide 144 in the ratio 1:2:3

    Answer: 24, 48 and 72
  5. 5. Statistics Mean

    Find the mean of: 6, 4, 18, 16

    Answer: 11

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