Compare 21/90 and 72/27
1st number: 21/90, 2nd number: 2 18/27
21/90 is smaller than 72/27
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 27 is 270
Next, find the equivalent fraction of both fractional numbers with denominator 270 - For the 1st fraction, since 90 × 3 = 270,
21/90 = 21 × 3/90 × 3 = 63/270 - Likewise, for the 2nd fraction, since 27 × 10 = 270,
72/27 = 72 × 10/27 × 10 = 720/270 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 63/270 < 720/270 or 21/90 < 72/27
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