Compare 45/90 and 56/20
1st number: 45/90, 2nd number: 2 16/20
45/90 is smaller than 56/20
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,
45/90 = 45 × 2/90 × 2 = 90/180 - Likewise, for the 2nd fraction, since 20 × 9 = 180,
56/20 = 56 × 9/20 × 9 = 504/180 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 90/180 < 504/180 or 45/90 < 56/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 45/90 and 56/40 45/90 and 56/60