- 
                  
Mathematics
 - 
                  
Word problems
 - 
                  
Edad 7-18
 - 
                    
level: Leve1
 - 
                  
English
 
Author's Instructions
- 
                  
Mathematics
 - 
                  
Word problems
 - 
                    
Edad 7-18
 - 
                    
level: Leve1
 - 
                  
English
 
