Practice
Name
7-4
Rational Numbers on a
Number Line
Write  or  in the circle.
-2.83
- 12
5
-1
-3
-2
- 4
11
-1
> 2​ __​ 
< 20.19
1. 21​_ 13 ​
1
3
12  
5
4. 2​__
 4  ​ 
11
11
8
0
1.88
1
11  ​
2. ​ __
8
5. 1.6
2
3
< 1.88
> _​  ​ 
3. 22.83
4 
3
6. 2​ _1 ​
6
<
<
21​ _31 ​
20.1
Write the numbers in order from least to greatest.
7. 0.66 , 2​ _1 ​, 2​__
 5  ​ 
3
12
_1
5
2​ __
12  ​, 2​ 3 ​, 0.66
7 ​
12  ​, 21.35, 21​ _
8. 2​ __
9
9.​ _38 ​, _​ 25 ​, 0.38
5
_3
_2
12  ​, 21​ _
7 ​, 21.35
2​ __
​   ,​ 0.38, ​   ​
5
5
9
8
Use the table for 10 and 11.
10. A scientist is testing lake water at different depths.
Order the samples of lake water from greatest depth
to least depth.
9
21.55, 21​ _38 ​, 2​ __
16  ​, 20.4
11. Number Sense At what depth could the scientist
take a new sample that would be shallower than the
shallowest sample?
Day
Feet Below the
Lake Surface
Monday
21​ _83 ​
Tuesday
2 0.4
Wednesday
21.55
Thursday
9   ​
2​ __
16
Sample answer: 2​_ 14 ​ft
12. Which rational number is least?
A 0.66
B 2​ _4 ​
5
C 2​_ 6 ​
7
D 20.6
13. Writing to Explain Lauren says that 23.5 is greater than 23​ _13 ​. Do
you agree? Explain.
No. Sample answer: 23 ​ _13 ​ is to the right of 23.5 on the
number line; so, 23.5 is less than 23 ​ _13 ​.
P 7•4
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