Posted by lost on Tuesday, September 14, 2010 at 10:33pm.
Larsen's class collected 137 cans. Schmidt's class collected 87 cans & Lopez's class collected 197 cans. Use mental math to see how many more cans Lopez's class collected than Schmidt's. (Got answer of 110) How many more cans did Larsen's class collect than Schmidt's. (Got answer of 50) Which property did you use to help you subtract mentally? Explain how you used it. Don't know how to answer the last 2 questions.

5th grade math  PsyDAG, Wednesday, September 15, 2010 at 11:55am
How did you do it?
http://www.google.com/search?client=safari&rls=en&q=math+property&ie=UTF8&oe=UTF8 
5th grade math  debbie, Wednesday, September 15, 2010 at 6:11pm
maximum help

5th grade math  Anonymous, Tuesday, October 2, 2012 at 2:16pm
50