This Application Problem is a part of the Lesson 6, Unit 4, Grade 1. Sheila has 3 bags with 10 pretzels in each bag and 9 extra pretzels. She gives 1 bag to a friend. How many pretzels does shhave now? Extension: John has 19 pretzels. How many more pretzels does he need to have as many as Sheila has now?