300
                            What is missing from the letter? 
                                     July 10, 2010 
Dear Joel
    How are you Joel? I hope you are having a great summer. I am having lots of fun. I have gone swimming and camping. I miss you and can't wait to see you in third grade!  
                                  Your friend, 
                                   Sylis 
                            The comma in the greeting: 
Dear Joel,