When the top number (numerator) is half of the bottom number (denominator) the fraction is a half.

When the top number (numerator) is one-fourth of the bottom number (denominator) the fraction is a quarter.


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1/2 = 2/4      3/6      4/8      5/10      6/12      7/14      10/20  


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1/4 = 2/8      3/12      4/16      5/20      6/24      7/28      10/40