This Application Problem is a part of the Lesson 10, Unit 2, Grade 1. There were 4 boots by the classroom door, 8 boots in the hallway, and 6 boots by the teacher's desk. How many boots were there altogether? How many pairs of boots were there in all? In this problem, the numbers 4, 8, and 6 are used as addends. To solve, students may choose to make ten by adding (4 + 6) + 8, or they may choose to decompose either the 4 or 6 to make ten with 8.
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