This Application Problem is a part of the Lesson 12, Unit 1, Grade 3. A chef arranges 4 rows of 3 red peppers on a tray. He adds 2 more rows of 3 yellow peppers. How many peppers are there altogether? Students might solve using an array to model the distributive property (Lesson 10) or a tape diagram (Lesson 11). If they use the latter strategy, it is likely their first use of a tape diagram to solve multiplication.