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IntegersIntegers are positive (+) and
negative(-) numbers.
Negative Integers represent a loss or a decrease. (Ex. -5, -18, -345, ...)
Positive Integers represent a gain or an increase. ( Ex. +3, +25, +467, ...)
Positive Integers
Emmit Smith gained 25 yards on his last play.
The elevator went up 6 floors.
The level of the pool water rose 3 inches after the big rain.
The babies weight increased 5 lbs. in the first two months.
+ 25
+6
+3
+5
Negative Integers
Clarisse lost 12 pounds on her diet.
Jack walked down 6 floors in his apartment building.
The temperature on Saturday decreased
10 degrees after the storm.
-12
-6
-10
Label each either positive or negative…
1) Profit of $5 9) Increase of 9 yards2) Win $10 10) Withdraw $403) Decrease of 6 degrees 11) Spend $154) Rise of 8 degrees 12) Minus 9 inches 5) Earn $12 13) Back/backwards 4
yards6) Lose 3 lbs 14) Deposit $ 807) Fall in price of $25 15) Bonus of $508) Plus 20 pounds 16) Gain of 15 yards
Opposite Integers
0-4 -3 -2 -1 +1 +2 +3 +4 +5
Integers that are the same distance from zero are OPPOSITE integers.
-3 +3
-3 and +3 are opposites because they are both 3 units from zero
3 units 3 units
Absolute Value
0-4 -3 -2 -1 +1 +2 +3 +4 +5
The absolute value of a number tells how far an integer is from zero.
The symbol for absolute value is I I
I 2 I = I - 4 I = 2 units from zero 4 units from zero
Absolute Value
0-4 -3 -2 -1 +1 +2 +3 +4 +5
Find the absolute value of :
I - 25 I I 43 I I - 768 I= 25 = 43 = 768
Comparing
Positive Integers are like money you have.
The higher the positive number the richer you are.
Negative Integers are like money you owe. The higher the negative number the poorer you are
Integers on a Number Lin e
0-4 -3 -2 -1 +1 +2 +3 +4 +5
biggersmaller
Which is greater? -8 or +2Which is greater? +5 or +3Which is smaller? -4 or -10Which is smaller? -6 or 0Positives are always greater than negatives.
OppositesPositive integersPositive integers have an opposite
Negative integer. Opposites are the same distance from 0 on the
number line in opposite directions.
Ex.opposite of -16 _______opposite of +4 _______ opposite of -67 _______opposite of +35 _______
OrderThe number line can also help you put integers in
order.
If the numbers are written down as they would If the numbers are written down as they would appear on the number line, they will be in order appear on the number line, they will be in order from least to greatestfrom least to greatest.
-5 -4 -3 -2 -1 0 +1 +2 +3 +4 +5 +6
Order from least to greatest.
-2 +5 +1 -7 0 -4 +6
How did you do?
-7, -4, -2, 0, +1, +5, +6-7, -4, -2, 0, +1, +5, +6
Good Job!!!!!Good Job!!!!!
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