L8-1 Notes:

1
Chapter 8

• L8-1 Notes
• Integers

2
Vocabulary

• Integer A whole positive or negative number (,
  3, 2, 1, 0, 1, 2, 3, ).
• Negative Integer Numbers less than zero (-3,
  -2, -1).
• Positive Integer -- Numbers greater than zero
  (1, 2, 3, )

3
Integers

• Write an integer to describe each situation.
• 1. A gain of 5 yards on the first down.
• 2. A temperature of 10 degrees below zero.
• 3. Lost 6 points.
• 4.12 feet above sea level.

4
Vocabulary

• To graph an integer on a number line, draw a dot
  at the location on the number line that
  corresponds to the integer.
• Graph -3 on the number line.

5
Graphing Integers

• Graph each integer on the number line.
• 1. -1
• 2. 4
• 3. 0

6
Comparing and Ordering Integers

• A number line can also be used to compare and
  order integers. On a number line, the number to
  the left is always less than the number to the
  right.

7
Comparing Integers

• Replace each with lt, gt, or to make a true
  sentence.
• 1. -3 -5
• 2. -5 0
• 3. 6 -1

8
Ordering Integers

• SCIENCE The average surface temperatures of
  Jupiter, Mars, Earth, and the Moon are shown in
  the table. Order the temperatures from least to
  greatest.

9
Vocabulary

• Opposites are numbers that are the same distance
  from zero in opposite directions on the number
  line.
• 1. 12
• 2. -7