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1. INTEGERS: Positively OUR Friends ? OR..The Negative Influences
of
Absolute Value
2. Absolute Value: The distance a number is away from zero on the number line without regard for its sign
3. The absolute value of +7 and -7 are both SEVEN!
+7 is 7 spaces to the right of zero.
-7 is 7 spaces to the left of zero.
Both have an absolute value of 7.
4. | | is the symbol used for absolute value
| 1 | = 1
| -1 | = 1
What is the | 8 |?
What is the | -8 | ?
5. INTEGERS Positive Integers
Whole numbers greater than zero often written without +sign
Negative Integers
Whole numbers less than zero ALWAYS has a - sign
6. Opposites: Give the opposites of the following:
Top
Forward
Increase
Positive
Add
Multiply
7. OPPOSITES in INTEGERS: Two integers are opposites if they are the same distance away from zero on a number line.
EXAMPLES:
+1, -1
+5, -5
+76, -76
8. ELEVATION: Distance a place is above or below sea level Mt. McKinley highest elevation in United States 20,320 feet above sea level Death Valley lowest elevation in United States 282 feet below sea level
9. What is the difference in elevation of Mt. McKinley and Death Valley? Mt. McKinley is 20,320 feet above sea level.
Death Valley is 282 feet below sea level.
20320 + 282 = 20602 feet is the difference in elevation
10. Mt. McKinley is 20,320 feet above sea level.
Represent as the integer +20,320
Death Valley is 282 feet below sea level.
Represent as the integer -282
To find the difference, 20,320 - -282=
How do you subtract a negative?
11. REAL LIFE & NEGATIVE NUMBERS Spending & earning $$$$
Rising & falling temps
Stock market gains and losses
Gaining and losing yards in football