- 
                  
Math
 - 
                  
Addition
 - 
                  
Age 4-9
 - 
                    
level: 1
 - 
                  
English
 
Author's Instructions
find the sum of three numbers
- 
                  
Math
 - 
                  
Addition
 - 
                    
Age 4-9
 - 
                    
level: 1
 - 
                  
English
 
Author's Instructions
find the sum of three numbers
