Number Line Operations and Concepts

This video tutorial explains how to add and subtract negative numbers using a number line. It covers the basic principles of moving right for positive numbers and left for negative numbers. The video includes four examples: adding two negative numbers, subtracting a negative number, adding a negative number to a positive number, and subtracting a negative number from a positive number. Each example is demonstrated step-by-step on a number line to clarify the concept.

What happens when you add a positive number on a number line?

• You move to the right.

• You stay in the same place.

• You move in a circle.

• You move to the left.

In the first example, what is the result of adding 6 to -10?

• 6

• -4

• 0

• -16

When subtracting a negative number, what direction do you move on the number line?

• Left

• Down

• Up

• Right

In the second example, what is the result of subtracting -2 from -8?

• 0

• -4

• -6

• -10

What is the absolute value of -7?

• -7

• 14

• 0

• 7

In the third example, what is the result of adding -7 to 4?

• -3

• 3

• 7

• -11

What is the result of subtracting -5 from 5?

• 10

• 0

• 5

• -10

What is the opposite of moving left on a number line?

• Moving right

• Moving up

• Moving down

• Staying still

What is the result of adding 5 and -5?

• 10

• 0

• 5

• -10

What concept explains why 5 minus -5 results in 10?

• Absolute value

• Additive inverses

• Multiplicative identity

• Subtraction rules