integers unit lesson: integers and absolute value where do we use integers in the real world?...
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Integers Unit
Lesson: Integers and Absolute Value
Where do we use integers in the Real World?TemperatureElevation (Death Valley, New Orleans)Stock MarketDebt
Integers: Positive, negative whole numbers and zero
Examples: 18 ft above sea level: 18 ft 100 ft below sea level: -100 ft 10 seconds before launch: -10 sec
Are the following numbers integers? Write yes or no.1.) 8 ____________ 2.) 2.65 ___________
3.) -4 ___________ 4.) ___________
5.) Give an example of an integer _______________
6.) Write a number that is not an integer _________
Opposites: Two numbers that are the same distance from zero
Examples: Find the opposite.
a.) 4
b.) -3
c.) 0
d.) graph -5 and its opposite on the number line
-1 0-2-3-4-5 1 2 3 4 5
Absolute Value: A number's distance from zero (symbol: )
Examples: Find the absolute value.
a.) -5 =
b.) 7 =
c.) 9 =
d.) 0 =
Important: Absolute value is always positive, except zero
Comparing Integers: The further to the right a number is on the number line, the greater the number.
-1 0-2-3-4-5 1 2 3 4 5
Use the number line above to compare the integers. Use
>,< or =.
a.) -7 -8 b.) -18 1 c.) -15 -20
d.) -12 12 e.) -4 -3
Order from least to greatest. Use the number line to help.
1.) -3, 5, -4, 0 _______________________
2.) -4, 2, 0, -1 _______________________
3.) -2, 3, -5, 1 _______________________
-1 0-2-3-4-5 1 2 3 4 5
Demonstrate Understanding: Integers and Absolute Value
1.) Compare: 21 -22
2.) Graph the integers on the number line. Then order from least to greatest: -11, -2, 0, 2, 7, -3
3.) Graph -3 and its opposite on the number line.
-1 0-2-3-4-5 1 2 3 4 5
-4 -2-6-8-10-12 0 2 4 6 8
4.) -2 5.) 78 6.) 0
Find each absolute value.
Write each opposite.
7.) -5 8.) 9 9.) 4