Grade 4 - Progress in Mathematics

(Marvins-Underground-K-12) #1
To compare mixed numbers:
First, compare the whole number parts. 6  6  6
Then, compare the fraction parts. 
1
2 ; 

1
2  

4
?? 8 

5
8

Draw 3 lines: 6 in., 6
1
2 in., 6

4
8 in. Then compare.

5
8

Visualize the facts of the problem as you reread it.
Facts: Bracelets are 6 in., 6^12 in., and 6^48 in.
Gwen’s bracelet is longer than Sonia’s.
Question: How long is Maraya’s bracelet?

5
8

Gwen, Maraya, and Sonia each buy a bracelet.
One is 6 in., one is 6^12 in., and the third is 6^48 in.
Gwen’s bracelet is longer than Sonia’s.
How long is Maraya’s bracelet?

5
8

Problem-Solving Strategy:


Logical Reasoning


8-11


Compare:



 

Compare:

 

(^48)  (^48)
4
8
1  4
2  4
1
2
4
? 8
1
2
4
8
1  4
2  4
1
2
5
8
5
8
1
? 2
5
8
So 6  6 ^12  and 6  6 ^48 .
Tw o bracelets are the same length. Gwen’s is longer
than Sonia’s, so Gwen’s bracelet is 6 85 in. long.
Sonia’s and Maraya’s must be equal in length. 6^12 in. 6 ^48 in.
5
8
5
8
5  4  So .
4  4  .
4
8
1
2
4
8
4
8
1
2
5
8
4
8
5
8
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