Lesson 2: Converting Between SI Units - Conversion Ratios Examples


EXAMPLE 1

Write a conversion ratio for litres and centilitres as

  1. an equality

  2. a fraction equal to 1

Solution


  1. an equality

    1 L = 100 cL

  2. a fraction equal to 1

    \(\frac{1\,\text{L}}{100\,\text{cL}}=1\) or \(\frac{100\,\text{cL}}{1\,\text{L}}=1\)

EXAMPLE 2

Write a conversion ratio for milligrams and hectograms as

  1. an equality

  2. a fraction equal to 1

Solution


  1. an equality

    1000 mg = 0.01 hg

  2. a fraction equal to 1

    \(\frac{1000\,\text{mg}}{0.01\,\text{hg}}=1\) or \(\frac{0.01\,\text{hg}}{1000\,\text{mg}}=1\)


Now, it is your turn! Complete the questions in your Chapter 5, Lesson 2 Practice Makes Perfect that refer to SI Conversion Ratios.



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