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Grade-4
Subtracting Fractions With Unlike Denominators - Word Problems
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Riley and Claudine joined their school basketball team this year. During the season, Riley played in
5
6
the games, and Claudine only played in
1
9
of the games. How many more games did Riley play than Claudine?
(Solve and reduce the fraction.)
Explanation
Remember, we cannot subtract fractions until the denominators are same. So, we have to find the least common denominator.
Least Common Denominator (LCD) of 6 and 9 is 18.
Now, we have to make sure both fractions have the same new denominator 18.
You can write fraction
5
6
as
5x3
6x3
=
15
18
You can write fraction
1
9
as
1x2
9x2
=
2
18
Now, both fractions have same denominator and we are ready to subtract
15
18
-
2
18
=
15-2
18
=
13
18
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