Compare 20/80 and 5/45
20/80 is greater than 5/45
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 45 is 720
Next, find the equivalent fraction of both fractional numbers with denominator 720 - For the 1st fraction, since 80 × 9 = 720,
20/80 = 20 × 9/80 × 9 = 180/720 - Likewise, for the 2nd fraction, since 45 × 16 = 720,
5/45 = 5 × 16/45 × 16 = 80/720 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 180/720 > 80/720 or 20/80 > 5/45
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