# Unit 2 Understanding Multiplication and Division

**In Unit 2 students will:**

- Interpret products of whole numbers. e.g., interpret 5 x 7 as the total number of objects in 5 groups of 7 objects each.
*For example*,*describe a context in which a total number of objects can be expressed as 5 x 7.* - Interpret whole-number quotients of whole numbers, e.g., interpret 56 ÷ 8 as the number of objects in each share when 56 objects are partitioned equally into 8 shares, or as a number of shares when 56 objects are partitioned into equal share of 8 objects each.
*For example, describe a context in which a number of shares or a number of groups can be expressed as 56 ÷ 8.* - Draw a scaled picture graph and a scaled bar graph to represent a data set with several categories. Solve one- and two- step "how many more" and "how many less" problems using information presented in scaled bar graphs.
*For example, draw a bar graph in which each square in the bar graph might represent 5 pets.*

**By the end of Unit 2 your child should be able to answer the following questions:**

- Why do the multiplication and division strategies that I have been taught work and how do they help me?
- How do multiplication and division strategies help me to become more fluent with my facts?

**The following videos explain some of the topics covered in Unit 2.**

**Array Multiplication**

**Reading A Pictograph**

**Zero Property**

**Identity Property**

**How Do You Use Parentheses?**

**Distributive Property of Multiplication**

**Commutative Property of Multiplication**

**Multiplying by 9's strategy**

**Schoolhouse Rock- Naughty Number Nine**

**Solve Division Problems with Subtraction**

**Dividing by Making Equal Groups**

**Dividing by One and Zero**

**Fact Families**