1. Ch 11.1 Integers + Absolute Value
Course 1

2. 11.1 Vocabulary 1
Positive Numbers: greater (>) than zero, sometimes written with a plus (+) sign.
Positives show gains, increases, above, more
Example: a $1 raise in allowance = +1
Negative Numbers: less (<) than zero, always written with a negative (-) or minus sign.
Negatives show losses, decreases, below, less
Example: losing a $5 bet = -5

3. 11.1 Integer Vocabulary 2a
Graph positives & negatives on a number line.
Opposites: points on a number line the same distance from zero but on opposites sides of 0. Zero is its own opposite.
Integers: a set or group of all whole numbers and their opposites (like -2, 0, 2, 5, or 124), with no fractions (like ½) or decimals (like 2.3).

4. 11.1 Opposites Negative Integers Positive Integers
Zero is neither negative nor positive.
Absolute values are never negative.
Opposite integers have same absolute value.

5. 11.1 Absolute Value Vocabulary 2b
Absolute Value: distance from 0 (number line). Its symbol is 2 vertical parallel lines like this l l.
l -3 l = 3; This is read as “the absolute value of -3 equals 3”.
This means that the distance from -3 to 0 on a number line is 3 steps away.
l 3 l = 3; This is read as “the absolute value of 3 equals 3”, so +3 is also 3 steps away from zero.
l 0 l = 0

6. 11.1 Discuss Tell whether -3.2 is an integer. Why/why not?
a is not a whole number
Give the opposite of 14. The opposite of -11.
a. Opposite of 14 is -14; opposite of -11 is 11.
Name all integers with absolute value of 12.
a. 12 and -12, so l 12 l = l -12 l = 12