Compare 1/20 and 81/16
1st number: 1/20, 2nd number: 5 1/16
1/20 is smaller than 81/16
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 16 is 80
Next, find the equivalent fraction of both fractional numbers with denominator 80 - For the 1st fraction, since 20 × 4 = 80,
1/20 = 1 × 4/20 × 4 = 4/80 - Likewise, for the 2nd fraction, since 16 × 5 = 80,
81/16 = 81 × 5/16 × 5 = 405/80 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 4/80 < 405/80 or 1/20 < 81/16
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