Compare 90/70 and 45/20
1st number: 1 20/70, 2nd number: 2 5/20
90/70 is smaller than 45/20
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 20 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 70 × 2 = 140,
90/70 = 90 × 2/70 × 2 = 180/140 - Likewise, for the 2nd fraction, since 20 × 7 = 140,
45/20 = 45 × 7/20 × 7 = 315/140 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 180/140 < 315/140 or 90/70 < 45/20
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