Lesson 4.4 Integers

# Multiply and Divide Integers

#### Materials

• CCB Mathematics pages 118 - 129

• Tic-Tac-Toe Integers

#### Standards

• MP.5

• Apply and extend previous understandings of operations with fractions to add, subtract, multiply, and divide rational numbers.

#### Objectives

• Multiply two integers

• Divide two integers

#### Key Concept

• Use rules to find products and quotients of integers

#### Vocabulary

Tier 2 Repeated ColumnInverseRowTable Title

## Before Lesson

In this lesson, students multiply and divide positive and negative whole numbers. To demonstrate readiness, have students review multiplying and dividing whole numbers by finding 1-digit by 1-digit products and the corresponding quotients.

## Background

Remind students that multiplication can be thought of as repeated addition. Demonstrate -2×4=(-2)+(-2)+(-2)+(-2) on a number line. Ask: What is the sign of the sum? What will be the sign of the product? Have students predict the sign in the division of negative integers.

## Guided Practice

• Multiply Integers