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# Unit 1: Module 1: Properties of multiplication and division and solving problems with units of 2–5 and 10

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"This module begins the year by building on students’ fluency with addition and their knowledge of arrays. In Topic A, students initially use repeated addition to find the total from a number of equal groups (2.OA.4). As students notice patterns, they let go of longer addition sentences in favor of more efficient multiplication facts (3.OA.1). Lessons in Topic A move students’ Grade 2 work with arrays and repeated addition a step further by developing skip-counting rows as a strategy for multiplication. Arrays become a cornerstone of the module. Students use the language of multiplication as they understand what factors are and differentiate between the size of groups and the number of groups within a given context. In this module, the factors 2 , 3 , 4 , 5 , and 10 provide an entry point for moving into more difficult factors in later modules." Eureka Math/EngageNY (c) 2015 GreatMinds.org

## Topic B: Division as an unknown factor problem

### Practice

#### Quiz 1

Level up on the above skills and collect up to 880 Mastery points

## Topic D: Division using units of 2 and 3

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### Practice

#### Quiz 2

Level up on the above skills and collect up to 640 Mastery points

## Topic F: Distributive property and problem solving using units of 2–5 and 10

### Practice

#### Quiz 3

Level up on the above skills and collect up to 720 Mastery points
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#### Unit test

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