Student Instructions
                    Click on the 
The first few pages of this activity show you how to use the mental math strategy for adding left to right. Using the 
 tool, answer the next few pages making sure to show your work. You may also use the 
 to explain your answers. Click on the green 
 to send to your teacher when you are done.
                
Teacher Notes (not visible to students)
Mental Math: adding left to right