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