Compare 9/20 and 81/72
1st number: 9/20, 2nd number: 1 9/72
9/20 is smaller than 81/72
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 72 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 20 × 18 = 360,
9/20 = 9 × 18/20 × 18 = 162/360 - Likewise, for the 2nd fraction, since 72 × 5 = 360,
81/72 = 81 × 5/72 × 5 = 405/360 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 162/360 < 405/360 or 9/20 < 81/72
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