Comparing And Ordering Fractions Worksheet
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Comparing and
Ordering Fractions
Now
B E F O R E
W H Y ?
You compared and
You’ll compare and
So you can determine the greater
ordered decimals.
order fractions.
fraction of games won, as in Ex. 36.
In the Real World
Word Watch
Kayaking
Julie and Seth are kayaking
down a river. Julie kayaks a distance
least common denominator
7
3
(LCD), p. 181
of
mile, and Seth kayaks
mile.
1
0
4
Who kayaked the greater distance?
You can compare fractions by using
the least common denominator. The
least common denominator (LCD)
of two or more fractions is the least
common multiple of the denominators.
Comparing Two or More Fractions
1. Find the LCD of the fractions.
2. Use the LCD to write equivalent fractions.
3. Compare the numerators.
1
Comparing Fractions Using the LCD
E X A M P L E
To find who kayaked the greater distance, as described above,
7
3
you need to compare
and
.
1
0
4
Find the LCD of the fractions.
1
Because the LCM of 10 and 4 is 20, the LCD is 20.
Use the LCD to write equivalent fractions.
2
7
7
2
1
4
3
3
5
1
5
Julie:
Seth:
1
0
1
0
2
2
0
4
4
5
2
0
1
4
1
5
7
3
<
<
Compare the numerators:
, so
.
3
2
0
2
0
1
0
4
Seth kayaked the greater distance.
ANSWER
181
Lesson 4.5
Comparing and Ordering Fractions
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