Compare 12/56 and 21/80
12/56 is smaller than 21/80
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 56 and 80 is 560
Next, find the equivalent fraction of both fractional numbers with denominator 560 - For the 1st fraction, since 56 × 10 = 560,
12/56 = 12 × 10/56 × 10 = 120/560 - Likewise, for the 2nd fraction, since 80 × 7 = 560,
21/80 = 21 × 7/80 × 7 = 147/560 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 120/560 < 147/560 or 12/56 < 21/80
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