Remember

 

 

Insert 0 into any empty space when numbers are lined up by decimals.


For example,

convert

5.54
+ 7.6  

to

5.54
+ 7.60

 

 

convert

4.315
+ 4.5    

convert

4.315
+ 4.500

 

 

Add the numbers.

2.7
+ 6.2

 2.2
+  8.3

2.5
+ 5.5

3.4
+ 6.1

 

 

8.8
+ 1.7

 9.8
+  6.2

4.7
+ 4.6

8.6
+ 4.5