Homework Explained - Math Practice 101

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Grade 6 McGraw Hill Glencoe - Answer Keys
Chapter 2: Fractions, Decimals, and Percents;Lesson 5:Compare and Order Fractions, Decimas and Percents


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Compare and Order Fractions

To compare fractions, you can follow these steps.

1. Find the least common denominator (LCD) of the fractions. That is, find the least common multiple of the denominators.

2. Write an equivalent fraction for each fraction using the LCD.

3. Compare the numerators.

Example                                                                                                            

Fill in each with <, >, or =to make a true statement.

1. \(\frac{5}{8}\)   \(\frac{7}{12}\)

The LCM of the denominators, 8 and 12, is 24. So, the LCD is 24.                               

Write an equivalent fraction with a denominator of 24 for each fraction.

\(\frac{15}{24}>\frac{14}{24}\), since \(15>14\). So, \(\frac{5}{8}>\frac{7}{12}\)

 

Got It? Do these problems to find out.

  • Question 1 (request help)

    a.

  • \(\large \frac{2}{3}\)   \(\large \frac{4}{9}\)
  • Question 1 (request help)

    b.

  • \(\large \frac{5}{12}\)   \(\large \frac{7}{8}\)
  • Question 1 (request help)

    c.

  • \(\large \frac{1}{6}\)   \(\large \frac{5}{18}\)

Example

2. Order the fractions \(\frac{1}{2},\frac{9}{14},\frac{3}{4},\text{ and } \frac{5}{7}\) from least to greatest.

Rewrite each fraction using the LCD of 28.

Since \(\frac{14}{28}<\frac{18}{28}<\frac{20}{28}<\frac{21}{28}\), the order of the original fractions from least to greatest is \(\frac{1}{2},\frac{9}{14},\frac{5}{7},\text{ and } \frac{3}{4}\).

 

Got It? Do this problem to find out.

  • Question 2 (request help)

    d. Order \(\frac{1}{2},\frac{5}{6},\frac{2}{3},\text{ and } \frac{3}{5}\) from least to greatest.

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