1.2c Homework: Rational Number Ordering and Estimation
ESTIMATE each of the following. Justify your answer with either words or a model. Indicate if your
estimate is larger or smaller than the exact answer.
Fraction
≈ Decimal
≈ Percent
Justification
1.
11
21
2.
16
27
3.
!"
!!
4.
13
17
5.
5
23
Fill in the blank with < , > , or = . Justify each with a picture or number-line or explanation.
6. 1
4
25
7. −1
4
25
8. −2.34
1.2
Justification:
−1.2
Justification:
−2
4
11
Justification:
7WB1 - 39
2014 University of Utah Middle School Math Project in partnership with the
Utah State Office of Education. Licensed under Creative Commons, cc-by.
!
9.
5
11
10. 4
5
6
11. −3
0.45
Justification:
10
13
Justification:
4
19
20
−3.94
Justification:
3
3
12. Order the following set of numbers from least to greatest: 1 , 1.73, 1 , 1.78
4
5
13. Order the following set of numbers from least to greatest: −0.26, −
3
6
, −0.35, −
10
25
14. Plot each rational number on the number line. Write them in order from least to greatest:
3
3
, − 0.38, , − 0.43
7
8
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)*!
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!
!!
:*!!!!!!
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!!!
!
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!
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!!!! !!!!!!!! !!
!
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!
!
!
7WB1 - 40
2014 University of Utah Middle School Math Project in partnership with the
Utah State Office of Education. Licensed under Creative Commons, cc-by.
!