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Grade-4
Adding Fractions With Unlike Denominators
Practice Preview
Add and write the simplified fraction :
4
6
+
1
5
Explanation
Remember, we cannot add fractions until the denominators are same. So, we have to find the least common denominator.
Least Common Denominator (LCD) of 6 and 5 is 30.
Now, we have to make sure both fractions have the same new denominator 30.
You can write fraction
4
6
as
4x5
6x5
=
20
30
You can write fraction
1
5
as
1x6
5x6
=
6
30
Now, both fractions have same denominator and we are ready to add
20
30
+
6
30
=
20+6
30
=
26
30
That can be simplified to
=
13
15
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