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MORE EXAMPLES
NE
ER T
INT
More examples
are available at
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Order Real Numbers
4
EXAMPLE
1
2
3
2
Write the numbers 2, 4, 0, 1.5, , and in increasing order.
1
2
Solution Graph the numbers on a number line. Remember that 0.5 and
3
2
that 1.5.
3
2 2
3
2
1
2
0
1
0
4
1.5
1
2
3
4
5
6
3
1
ANSWER 䊳 From the graph, you can see that the order is: 2, , 0, , 1.5, 4.
2
2
Order Real Numbers
Science
Write the numbers in increasing order.
5 3
4. 3, 0, 4, , , 1
4 2
EXAMPLE
1
5. 3, 3, 3.2, , 8, 4.5
2
Compare Real Numbers
5
NOME, ALASKA The table shows the low temperatures in Nome, Alaska, for
five days in December. Which low temperature was the coldest?
Date
Dec. 18
Dec. 19
Dec. 20
Dec. 21
Dec. 22
Low Temp.
10°F
11°F
16°F
3°F
2°F
NOME, ALASKA The
Solution First graph the temperatures on a number line.
11
INT
coldest low temperature
on record for Nome, Alaska,
is 54°F.
NE
ER T
DATA UPDATE of
National Oceanic
and Atmospheric
Administration data at
www.mcdougallittell.com
20
ANSWER 䊳
15
10
10
5
2
3
0
5
16
10
15
20
The coldest low temperature was 11°F.
Compare Real Numbers
6. The table shows the low temperatures in Nome, Alaska, for five days in
February. Which dates had low temperatures above 10°F?
Date
Feb. 22
Feb. 23
Feb. 24
Feb. 25
Feb. 26
Low Temp.
20°F
11°F
20°F
17°F
15°F
2.1
The Real Number Line
67