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Integers
can be compared
by using a number line.
Number Lines can also
help
when
+ -
integers
 I
 IIIIIIIII
-5
-4
-3
-2 -1
0
1
2
3 4
Integers are both
positive and negative whole numbers.
Positive
numbers
are those that are
greater than zero (0)
Negative
numbers
are those that are
less than zero (0)
I
IIIIIIIII
-5
-4
-3
-2 -1
0
1
2
3 4
As you read a
Number Line from left to right,
the numbers become greater.
For example:
-1
is greater than -4,
because it is further to the right on the Number Line.
I
IIIIIIIII
-5
-4
-3 -2
-1
0
1
2
3 4
+1
+1 +1
-2 + 3 = 1
By starting at -2
and moving +3 (to the RIGHT),
you would arrive at an answer of 1.
- OR -
I
IIIIIIIII
-5
-4
-3
-2
-1
0
1
2
3
4
-1
-1
-1
-1 - (-3)
= -4
By starting at -1
and moving -3 (to the LEFT),
you would arrive at an answer of -4.
Upon further review:
Number
lines can:
* help determine greater than and less than
* help in adding (+), subtracting (-) integers
.
positive
numbers moves to the right,
and negative
numbers move to the left
Let's Practice!
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