August 22: Integers & Absolute Value

1.1 Warmup #1-3Evaluate each expression using the order of operations.

1.

2.

3.

Integers

• The integers are:• positive and negative whole numbers; and• zero (which is a whole number but neither positive nor

negative).

• Examples:• 72• 0• –6• – 325

Non-examples:• – 3.15• ½• π• 5,260.8

Integers

• Integers are represented in math by using the number line that extends right and left from 0.

• Here are some integers on the number line:

Comparing Integers• When you compare two integers, the lesser

(smaller) number is to the left, and the greater (larger) number is to the right.

• For example, –3 is less than 35.

• This might surprise you: – 39 is less than – 3.

Comparing Integers

• Try it yourself. Fill in the blanks with < or >.

*Reminder:< means “is less than”

> means “is greater than”

Comparing Integers

• Try it yourself. Rewrite these integers in order from least to greatest:

Absolute Value

Absolute Value

• Try it yourself.

What is the absolute value of 2?

What is the absolute value of ?

What is ?

What is ?

Absolute Value AND Comparing Integers

• Try it yourself.Put the following values in order from least to greatest.