Grade 3 Mathematics Module 3, Topic E, Overview

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In Topic E, students begin by working with facts using units of 0 and 1.  From a procedural standpoint, these are simple facts that require little time for students to master; however, understanding the concept of nothing (zero) is among the more complex, particularly as it relates to division.  This unique combination of simple and complex explains the late introduction of 0 and 1 in the sequence of factors.  Students study the results of multiplying and dividing with those units to identify relationships and patterns (3.OA.7, 3.OA.9).  The topic closes with a lesson devoted to two-step problems involving all four operations (3.OA.8).  In this lesson, students work with equations involving unknown quantities and apply the rounding skills learned in Module 2 to make estimations that help them assess the reasonableness of their solutions (3.OA.8).

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Common Core Learning Standards

CCLS State Standard
3.OA.3 Use multiplication and division within 100 to solve word problems in situations involving equal...
3.OA.7 Fluently multiply and divide within 100, using strategies such as the relationship between...
3.OA.8 Solve two-step word problems using the four operations. Represent these problems using equations...

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