Chapter 4.2
Multiplying integers
What You'll Learn
Identify the sign rules for multiplying positive and negative integers
Use number lines to visualize and represent integer multiplication
Apply vertical multiplication to compute products of multi-digit integers
Estimate products by rounding to the nearest multiple of ten
Recognize that multiplying by zero always results in zero
What You'll Practice
1
Writing multiplication statements from number line diagrams
2
Drawing number lines for positive and negative integer products
3
Estimating and calculating double-digit integer multiplication
4
Multiplying integers with different numbers of digits
5
Solving word problems involving integer multiplication
Why This Matters
Mastering integer multiplication is essential for algebra, pre-calculus, and real-world problem solving. Whether you're calculating profits and losses, measuring temperature changes, or analyzing data trends, these skills let you work confidently with both positive and negative numbers in any context.
Before You Start — Make Sure You Can:
This Unit Includes
14 Video lessons
Practice exercises
Skills
Integer Multiplication
Number Lines
Sign Rules
Estimation
Vertical Multiplication
Word Problems
