This Application Problem is a part of the Lesson 28, Unit 2, Grade 1. Ruben has 7 blue cars and 6 red cars. If Ruben puts all of the blue cars in his car carrier that carries 10 cars, how many red cars will fit in the carrier, and how many will be left out of the carrier? This Application Problem serves multiple purposes. Some students may respond to the problem with an answer of 13 cars, anticipating the question as, "How many cars does Ruben have?" Look for such misinterpretations as an opportunity to reinforce the importance of reading the question carefully.