Compare 81/32 and 21/20
1st number: 2 17/32, 2nd number: 1 1/20
81/32 is greater than 21/20
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 32 and 20 is 160
Next, find the equivalent fraction of both fractional numbers with denominator 160 - For the 1st fraction, since 32 × 5 = 160,
81/32 = 81 × 5/32 × 5 = 405/160 - Likewise, for the 2nd fraction, since 20 × 8 = 160,
21/20 = 21 × 8/20 × 8 = 168/160 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 405/160 > 168/160 or 81/32 > 21/20
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