The kindergartners each need to bring one mini tissue box to class for the school year.  There are three kindergartner groups with 9, 10, and 11 students respectively.  Each mini tissue box contains 40 tissues.  How many tissues do the kindergartner groups bring together?
There are a total of 9 + 10 + 11 = <<9+10+11=30>>30 kindergartners.
Altogether, they bring a total of 30 x 40 = <<30*40=1200>>1200 tissues.
#### 1200