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1. Write the Lowest Common
Multiple (LCM) for the denominators of the fractions below. 

1⁄2 and 3⁄5 LCM = 10 5/10 and 6/10

4⁄5 and 5⁄6 LCM = 30 24/30 and 25/30 
3⁄8 and 2⁄3 LCM = 24 9/24 and 16/24 
5⁄6 and 3⁄4 LCM = 12 10/12 and 9/12 
5⁄18 and 2⁄3 LCM = 36 10/36 and 24/36 
7⁄12 and 5⁄9 LCM = 36 21/36 and 20/36 
17⁄20 and 4⁄5 LCM = 20 17/20 and 16/20 
3⁄10 and 1⁄6 LCM = 30 9/30 and 5/30 
10⁄27 and 7⁄18 LCM = 54 20/54 and 21/54 
1⁄3 and 8⁄25 LCM = 75 25/75 and 24/75 
17⁄21 and 11⁄14 LCM = 42 34/42 and 33/42 
13⁄16 and 11⁄12 LCM = 48 39/48 and 44/48 
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The various resources listed below are aligned to the same standard, (4NF01) taken from the CCSM (Common Core Standards For Mathematics) as the Fractions Worksheet shown above.
Explain why a fraction a/b is equivalent to a fraction (n x a)/(n x b) by using visual fraction models, with attention to how the number and size of the parts differ even though the two fractions themselves are the same size. Use this principle to recognize and generate equivalent fractions.
Similar to the above listing, the resources below are aligned to related standards in the Common Core For Mathematics that together support the following learning outcome:
Extend understanding of fraction equivalence and ordering