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Pre‐Algebra Multiplying Mixed Numbers The two methods shown below are equivalent. Use whichever one you like best. Box Method Improper Fraction Method In the box method, In the Improper Fraction Method, •
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Create a 2x2 array of multiplications from the parts of the fractions. Perform the 4 multiplications. Add the results. · 4 Example: Multiply 2
Multiply 2 4 8
12
7
4
5
6
35
8
12
7
8
60
8
8
28
35
94
35
2
4
5
6
Example: Multiply 2
2
24
35
Version 2.1
3
2
· 4 7
5
374
35
6
35
· 4 17 22
· 7 5
The result is obtained by adding the results of the 4 separate multiplications. 2
3
2 · 4
5
7
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Change the two mixed numbers to improper fractions. Multiply the improper fractions. Change the product back to a mixed number. 12/01/2010
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