What symbol is used for the "alligator"?
< and >
Two numbers are opposites when they have...?
Completely different signs
When I say "the Magic box", I'm talking about...?
Absolute Value!
Where do negative numbers go on a number line?
To the left of zero
What is a whole number?
A number with no fractions or decimals
What is the "alligator" used for?
Comparing integers
- Greater than or less than
What are the two signs a number can be?
positive (+) OR negative (-)
What is this equation asking for:
|-4| ?
The absolute value of -4.
Where do positive numbers go on a number line?
To the right of 0
What are integers?
Whole number and their opposites?
In comparing integers, what does the "alligator" point towards?
the number that is most to the right on the number line
- The bigger number
How many signs should an integer have directly in front of it?
only one
if there are more, they can be simplified
What does Absolute value (the magic box) do?
Turn NEGATIVE numbers POSITIVE
Positive numbers stay the same!
What sign is zero?
neutral, neither positive or negative
What aren't integers?
Decimals, Fractions, Percentages
Compare these sets of integers. Where does the alligator point to?
45 and 98
-64 and -90
45 < 98
-90 < -64
2 of the same sign make a....?
2 different signs make a.....?
----------------------------------------------------
An ODD number of negative signs (-) make a...?
An EVEN number of POSITVE (-) signs make a....?
Positive
Negative
Negative
Positive
What is |-89,678| and the absolute value of 56?
89,678 and 56
On a thermometer, what are negative numbers?
temperatures below 0o
For Celsius- below freezing
Is 2.5 an Integer?
nope, contains a decimal
What is the fancy math name for the "alligator"?
the inequality sign
Simplify :
+79 + (- 107)
- 28
What value does absolute value actually give you?
(What is actually coming out of the magic box and why is it always positive?)
Absolute Value gives a the distance from a giving number and 0 on a number line
- A distance length is always positive
If it was 36o Fahrenheit this morning and now it's -14o Fahrenheit, how much did the temperature drop?
50o
Is 3 4/5 an integer?
nope, contains a fraction