Compare 16/21 and 90/80
1st number: 16/21, 2nd number: 1 10/80
16/21 is smaller than 90/80
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 80 is 1680
Next, find the equivalent fraction of both fractional numbers with denominator 1680 - For the 1st fraction, since 21 × 80 = 1680,
16/21 = 16 × 80/21 × 80 = 1280/1680 - Likewise, for the 2nd fraction, since 80 × 21 = 1680,
90/80 = 90 × 21/80 × 21 = 1890/1680 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 1280/1680 < 1890/1680 or 16/21 < 90/80
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 32/21 and 90/80 16/42 and 90/80 48/21 and 90/80 16/63 and 90/80 80/21 and 90/80