Grade 4 - Progress in Mathematics

Add Fractions: Like Denominators

9-1

Pam walked 
 13 
 0 mile from her house

to school. Then she walked 
 150 
mile

from school to the bus stop.

How far did Pam walk?

To find how far Pam walked, add: 
 1

3

0 

 1

5

0 

To add fractions with like denominators:

Add the numerators. 
 130 

 150 

 18 

Write the like denominator. 
 130 

 150 

 180 

Write the sum in simplest form. 
 1

8

0 

 1

. 8
0

.



2


 2 


4

5 

Pam walked 
^45 
mile.

Study these examples.


^49 
 
^27 




5

9 
 

3

7 





9

9 
^1 simplest form 

5

7 

Add. Write the sum in simplest form.

Yo u can use a number line to help.

1. 
   ^14
   
   ^24
   2.
   ^58
   
   ^28
   3.
   ^13
   
   ^13
   4.
   ^27
   
   ^47
   

__ 9 10 __

10

__ 8

10

__ 7

10

__ 6

10

__ 5

10

__ 4

10

__ 3

10

__ 2

10

__ 1

10

__ 0

10 10

Think

3  5  8

GCF: 2

Factors of 8:

1, 2 , 4, 8

Factors of 10:

1, 2 , 5, 10

The denominators

are the same.

 110 

 12 
 0 
 14 
 0 
 17 
 0

1.9

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