Grade 4 - Progress in Mathematics

Add and Subtract Mixed Numbers

9-5

To find how many they buy in all,

add: 2
 1

6

0 
^1 
 1

2

0 

Akers’ Farms displays plants in

trays of ten. Lucy buys 2
 160 
trays

of plants and her brother buys

1 
 120 
trays. How many trays of plants

do they buy in all? How many more

trays does Lucy buy than her brother?

They buy 3
^45 
trays in all.

Lucy buys 1
^25 
more trays than her brother.

Subtract the

fractions.

Subtract the

whole numbers.

Write in

simplest form.

Add the

fractions.

Add the

whole numbers.

Write in

simplest form.

2 
 160 

 1 
 1

2

0 



 180 

2 
 160 

 1 
 1

2

0 


3 
 1

8

0 

2 
 1

6

0 


 1 
 1

2

0 


3 
 1

8

0 
 ^3


^45 

2 
 160 

 1 
 12 
 0

 14 
 0

2 
 160 

 1 
 120 

1 
 140 

2 
 160 

 1 
 120 

1 
 140 
  1 
^25 

To find how many more trays Lucy buys,

subtract: 2
 1

6

0 
^1 
 1

2

0 

8204-6_304-305 12/16/05 5:39 AM Page 304