This is a fun worksheet for the Christmas season where students practice their skills adding positive and negative integers on a Christmas tree. They start at the bottom of the tree and work their way up, writing answers in triangles as they go. The final answer goes at the top of the Christmas tree. The only way to get the correct answer at the top of the tree is to have correct answers in all the other triangles. The integers range from -240 to 246.
I like to give candy to the first few students who get the correct answer at the top of the tree, since Middle School students love competition!
The answer key is included.
Teaching Duration: 15 Minutes