Transcript B4 Identifying and represetning positive integers on a number line

TODAY WE WILL IDENTIFY
AND REPRESENT POSITIVE
NUMBERS ON A NUMBER LINE
Identify = point out
Represent = stand for
Positive number = number greater
than zero
Number line= line in which indicate the
sequence of numbers
NUMBER LINE!
Number lines are used for many things!
A few of the uses of number lines are to:
Add
Subtract
5+3=8
0
1
2
3
4
6-5=1
5
6
7
8
9
10
11
12
13
POSITIVE NUMBERS
All numbers that are greater than zero! Remember
that if a number does not have a sign next to it,
then it is positive!
Some examples are:
7, 8, +8, 9, +19, 1,000,000
etc.
Non-examples are:
-1, -3, -1,000,023
NUMBER LINE
a number line is a picture of a straight line on
which every point corresponds to a real number and
every real number to a point.
0
1
2
3
4
5
6
7
8
9
10
11
12
13
HINT
If
you don’t see a negative
or positive sign in front of a
number it is positive.
+9
LET’S PRACTICE IDENTIFYING POSITIVE
INTEGERS!
Where is point A located?
1.
2.
3.
4.
That’s
right! 6
Steps:
Look at the point
Look at the point
above the number line
Where is it located?
Write that number
down!
A
.
0
1
2
3
4
5
6
7
8
9
10
11
12
13
LET’S PRACTICE IDENTIFYING POSITIVE
INTEGERS!
Where is point x located?
1.
2.
3.
4.
That’s
right! 11
Steps:
Look at the point
Look at the point
above the number line
Where is it located?
Write that number
down!
x
.
0
1
2
3
4
5
6
7
8
9
10
11
12
13
LET’S PRACTICE IDENTIFYING POSITIVE
INTEGERS!
Where is point t located?
1.
2.
3.
4.
That’s
right! 0
Steps:
Look at the point
Look at the point
above the number line
Where is it located?
Write that number
down!
t
.
0
1
2
3
4
5
6
7
8
9
10
11
12
13
NOW LET’S PRACTICE REPRESENTING
POSITIVE INTEGERS ON A NUMBER LINE!
Represent point x on the number line
Draw and label it on the number line
at 8
1.
2.
X
.
0
1
2
3
4
3.
5
6
7
8
9
Steps:
Look at the
number you are
going to represent
Look at the
number line and
think where it is
going to be placed
Represent on the
number line above
the number
10
11
12
13
NOW LET’S PRACTICE REPRESENTING
POSITIVE INTEGERS ON A NUMBER LINE!
Represent point a on the number line
Draw and label it on the number line
at 0
1.
2.
a
.
0
1
2
3
4
3.
5
6
7
8
9
Steps:
Look at the
number you are
going to represent
Look at the
number line and
think where it is
going to be placed
Represent on the
number line above
the number
10
11
12
13
NOW LET’S PRACTICE REPRESENTING
POSITIVE INTEGERS ON A NUMBER LINE!
Represent point b on the number line
Draw and label it on the number line
at 13
1.
2.
b
.
0
1
2
3
4
3.
5
6
7
8
9
Steps:
Look at the
number you are
going to represent
Look at the
number line and
think where it is
going to be placed
Represent on the
number line above
the number
10
11
12
13
LET’S SEE WHAT WE’VE LEARNED!
What is a number line?
0
1
2
3
4
5
6
7
What are positive
integers?
8
+8
8
9
10
11
12
13