Operations with Negative Numbers and Expressions

In this video tutorial, the teacher guides students through lesson 13, focusing on practice problems involving expressions with rational numbers. The lesson covers addition, subtraction, multiplication, and division, emphasizing the importance of understanding signs and absolute values. The teacher also demonstrates how to order expressions from least to greatest, using a number line for visualization. Key concepts include the distributive property and the cha-cha-cha method for handling negative signs.

What is the result of adding -22 and 5?

• -27

• -17

• 17

• 27

When subtracting a positive number from a negative number, what should you do with the signs?

• Multiply them

• Find the difference

• Ignore them

• Add them

What is the product of -22 and -5?

• 110

• -110

• 100

• -100

How does the number of negative signs affect the result of a multiplication?

• Odd number results in positive

• Even number results in negative

• Odd number results in negative

• Even number results in zero

What is the result of dividing 22 by 5?

• 4.4

• 4.2

• 4

• 5

How many negative signs result in a negative quotient?

• Four

• Three

• Two

• One

If x = -1/4, what is the value of 1 - x?

• 1/4

• 1

• 1 and 1/4

• 0

What is the result of -1 divided by -1/4?

• -1/4

• 1/4

• 4

• -4

Which expression is the smallest when x = -1/4?

• -1/x

• 1 - x

• x - 1

• x

Why is it important to use original expressions when ordering them?

• To simplify calculations

• To make it easier

• To ensure accuracy

• To avoid confusion