Compare 18/45 and 21/16
1st number: 18/45, 2nd number: 1 5/16
18/45 is smaller than 21/16
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 16 is 720
Next, find the equivalent fraction of both fractional numbers with denominator 720 - For the 1st fraction, since 45 × 16 = 720,
18/45 = 18 × 16/45 × 16 = 288/720 - Likewise, for the 2nd fraction, since 16 × 45 = 720,
21/16 = 21 × 45/16 × 45 = 945/720 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 288/720 < 945/720 or 18/45 < 21/16
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