Compare 90/42 and 90/20
1st number: 2 6/42, 2nd number: 4 10/20
90/42 is smaller than 90/20
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 20 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 42 × 10 = 420,
90/42 = 90 × 10/42 × 10 = 900/420 - Likewise, for the 2nd fraction, since 20 × 21 = 420,
90/20 = 90 × 21/20 × 21 = 1890/420 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 900/420 < 1890/420 or 90/42 < 90/20
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