Compare 4/2 and 21/45
1st number: 2 0/2, 2nd number: 21/45
4/2 is greater than 21/45
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 2 and 45 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 2 × 45 = 90,
4/2 = 4 × 45/2 × 45 = 180/90 - Likewise, for the 2nd fraction, since 45 × 2 = 90,
21/45 = 21 × 2/45 × 2 = 42/90 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 180/90 > 42/90 or 4/2 > 21/45
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/2 and 21/45 4/2 and 42/45 4/2 and 21/90 12/2 and 21/45 4/2 and 63/45 4/6 and 21/45 20/2 and 21/45 4/10 and 21/45 28/2 and 21/45 4/14 and 21/45