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Cornerstone · Grades 3–5 Keystones #1 9 September 2012 Skills week 1 of 7
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Five GCSE retrieval questions · 9 September 2012 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 2⁄6 + 2⁄3

    Answer: 1⁄1
  2. 2. Algebra Two-step equations

    Solve: 5x + 11 = 26

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

    Find the hypotenuse of a right triangle with sides 15cm and 20cm

    Answer: 25cm
  4. 4. Ratio Sharing in a ratio

    Share 60 in the ratio 2:3

    Answer: 24 and 36
  5. 5. Statistics Mean

    Calculate the mean of: 24, 16, 17, 33, 26, 31, 41, 19. Give your answer to 2 decimal places

    Answer: 25.88

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