Compare 42/90 and 1/20
42/90 is greater than 1/20
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 20 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 90 × 2 = 180,
42/90 = 42 × 2/90 × 2 = 84/180 - Likewise, for the 2nd fraction, since 20 × 9 = 180,
1/20 = 1 × 9/20 × 9 = 9/180 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 84/180 > 9/180 or 42/90 > 1/20
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