Compare 3/45 and 20/12
1st number: 3/45, 2nd number: 1 8/12
3/45 is smaller than 20/12
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 12 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 45 × 4 = 180,
3/45 = 3 × 4/45 × 4 = 12/180 - Likewise, for the 2nd fraction, since 12 × 15 = 180,
20/12 = 20 × 15/12 × 15 = 300/180 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 12/180 < 300/180 or 3/45 < 20/12
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