Number Lines and Integers

The Number Line & Integers

Poll

Have you heard the term "integer" before?

• Yes

• No

• Not sure

What is an Integer?

• All positive and negative counting numbers, including 0

• Whole numbers - NO decimals or fractions

• Examples: -5, -1, 0, 2, 10

Multiple Select

Select ALL the integers

• 0

• -2

• 8.9

• $$\frac{1}{2}$$

Where do we find integers?

On the number line!

A number line can be horizontal

or vertical

Multiple Choice

If we move to the RIGHT on a horizontal number line, do the integers get bigger or smaller?

• Bigger

• Smaller

Multiple Choice

If we move to the LEFT on a horizontal number line, do the numbers increase or decrease?

• Decrease

• Increase

Negative Integers

• Less than zero

• Example: temperature

Multiple Choice

Where do you find a negative integer on the number line?

• To the left of zero

• To the right of zero

Zero is the ORIGIN, the starting point, "home base"

Negative Numbers are "opposites"

• The opposite of 4 is -4 

• Both 4 and -4 are the same distance away from o

As you move left, numbers become SMALLER

Multiple Choice

Which integer is smaller?

• -10

• -3

Multiple Choice

Which integer is bigger?

• -4

• -2

Open Ended

Write the numbers in order from smallest to largest. -5, -9, 0, 3, 1, -1

-9, -5, -1, 0, 1, 3