Compare 45/36 and 81/21
1st number: 1 9/36, 2nd number: 3 18/21
45/36 is smaller than 81/21
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 36 and 21 is 252
Next, find the equivalent fraction of both fractional numbers with denominator 252 - For the 1st fraction, since 36 × 7 = 252,
45/36 = 45 × 7/36 × 7 = 315/252 - Likewise, for the 2nd fraction, since 21 × 12 = 252,
81/21 = 81 × 12/21 × 12 = 972/252 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 315/252 < 972/252 or 45/36 < 81/21
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