1. Multiplying and Dividing Integers
Lesson 1-9
Multiplying and Dividing Integers

2. After it is launched a hot air balloon ascends at 15 ft/sec
After it is launched a hot air balloon ascends at 15 ft/sec. How high is the balloon at 5 seconds?

3. Multiplication is just repeated addition

4. Rules for Multiplying
The product of two positive numbers is a positive number.
The product of two negative numbers is a positive number.
The product of two integers with different signs is negative.

5. The same rules apply to division.

6. Examples

7. The product of zero and any integer is zero.
Division by 0 is undefined.