Compare 1/80 and 63/42
1st number: 1/80, 2nd number: 1 21/42
1/80 is smaller than 63/42
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 42 is 1680
Next, find the equivalent fraction of both fractional numbers with denominator 1680 - For the 1st fraction, since 80 × 21 = 1680,
1/80 = 1 × 21/80 × 21 = 21/1680 - Likewise, for the 2nd fraction, since 42 × 40 = 1680,
63/42 = 63 × 40/42 × 40 = 2520/1680 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 21/1680 < 2520/1680 or 1/80 < 63/42
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 2/80 and 63/42 1/80 and 63/84 3/80 and 63/42 5/80 and 63/42 7/80 and 63/42