Compare 20/45 and 5/4
1st number: 20/45, 2nd number: 1 1/4
20/45 is smaller than 5/4
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 4 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 45 × 4 = 180,
20/45 = 20 × 4/45 × 4 = 80/180 - Likewise, for the 2nd fraction, since 4 × 45 = 180,
5/4 = 5 × 45/4 × 45 = 225/180 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 80/180 < 225/180 or 20/45 < 5/4
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