Unit 7, Lesson 9, Grade 4 icon
Unit 7, Lesson 9

Solve problems involving mixed units of time

EngageNY 60 min(s)

In this lesson, students add and subtract mixed units of time (for example, adding 2 hours 45 minutes + 50 minutes, or subtracting 7 hours 15 minutes - 38 minutes). They compare two strategies for composing and decomposing units in these problems, and determine which one they prefer.

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