Compare 9/90 and 1/21
9/90 is greater than 1/21
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 21 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 90 × 7 = 630,
9/90 = 9 × 7/90 × 7 = 63/630 - Likewise, for the 2nd fraction, since 21 × 30 = 630,
1/21 = 1 × 30/21 × 30 = 30/630 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 63/630 > 30/630 or 9/90 > 1/21
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