Compare 21/20 and 81/50
1st number: 1 1/20, 2nd number: 1 31/50
21/20 is smaller than 81/50
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 50 is 100
Next, find the equivalent fraction of both fractional numbers with denominator 100 - For the 1st fraction, since 20 × 5 = 100,
21/20 = 21 × 5/20 × 5 = 105/100 - Likewise, for the 2nd fraction, since 50 × 2 = 100,
81/50 = 81 × 2/50 × 2 = 162/100 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 105/100 < 162/100 or 21/20 < 81/50
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