Thanks "drwls" but do you know how to solve that problem using the bar model method? I know what the answer is. I just don't know how to draw it like you do in Singapore math. Thanks...
Since this is not my area of expertise, I searched Google under the key words "Singapore Math bar model method" to get these possible sources:
http://www.google.com/search?client=safari&rls=en&q=Singapore+math+bar+model+method&ie=UTF-8&oe=UTF-8
In the future, you can find the information you desire more quickly, if you use appropriate key words to do your own search. Also see http://hanlib.sou.edu/searchtools/.