Compare 21/70 and 3/9
21/70 is smaller than 3/9
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 9 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 70 × 9 = 630,
21/70 = 21 × 9/70 × 9 = 189/630 - Likewise, for the 2nd fraction, since 9 × 70 = 630,
3/9 = 3 × 70/9 × 70 = 210/630 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 189/630 < 210/630 or 21/70 < 3/9
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