Question 109183
Four buttons have diameters of 5/8 , 3/4  ,9/16  , and 7/8  inches. Which button is smallest? 
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Change the denominator of each of the fractions to 16:
5/8 = 10/16
3/4 = 12/16
9/16 = 9/16
7/8 = 14/16
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Now you can compare the numbers because they all 
have the same denominators:
The smallest is 9/16
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Cheers,
Stan H.