Answer:
Word form : One tens two ones one tenth three hundredth.
Expanded form : 
 .
.
Explanation:
Given : 12.13 
To find: word form and expanded form.
Solution : We have given that 12.13 
We can see 1 before decimal is at tens place and 2 is at ones place 
and 1 after decimal is at tenth place and 3 is at hundredth place .
Word form : One tens two ones one tenth three hundredth.
Expanded form : 
 .
.
Therefore, Word form : One tens two ones one tenth three hundredth.
Expanded form : 
 .
.