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4.5 Goal: Comparing and Ordering Fractions PowerPoint PPT Presentation

4.5 Goal: Comparing and Ordering Fractions. Something to think about? Julie and Seth are kayaking down a river. Julie kayaks a distance of 7/10 mile, and Seth kayaks 3/4 of a mile. Who kayaked the greater distance?. Definition.

4.5 Goal: Comparing and Ordering Fractions

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4.5 Goal: Comparing and Ordering Fractions

• Julie and Seth are kayaking down a river. Julie kayaks a distance of 7/10 mile, and Seth kayaks 3/4 of a mile. Who kayaked the greater distance?

Definition

The LEAST COMMON DENOMINATOR (LCD) of two or more fractions is the least common multiple of the denominators.

When comparing two or fractions:

• Find the LCD of the fractions

• Use the LCD to write equivalent fractions.

• Compare the numerators.

Example 1: Comparing Fractions Using LCD

• To find who kayaked the greater distance we just talked about you need to compare 7/10 and 3/4

Example 2: Ordering Fractions

• Order the fractions 2/3, 3/8, 1/6, and 3/4 from least to greatest.