Compare 21/70 and 20/7
1st number: 21/70, 2nd number: 2 6/7
21/70 is smaller than 20/7
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 7 is 70
Next, find the equivalent fraction of both fractional numbers with denominator 70 - For the 1st fraction, since 70 × 1 = 70,
21/70 = 21 × 1/70 × 1 = 21/70 - Likewise, for the 2nd fraction, since 7 × 10 = 70,
20/7 = 20 × 10/7 × 10 = 200/70 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 21/70 < 200/70 or 21/70 < 20/7
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