Compare 8/20 and 90/45
1st number: 8/20, 2nd number: 2 0/45
8/20 is smaller than 90/45
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 45 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 20 × 9 = 180,
8/20 = 8 × 9/20 × 9 = 72/180 - Likewise, for the 2nd fraction, since 45 × 4 = 180,
90/45 = 90 × 4/45 × 4 = 360/180 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 72/180 < 360/180 or 8/20 < 90/45
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 16/20 and 90/45 8/40 and 90/45 24/20 and 90/45 8/60 and 90/45 40/20 and 90/45 56/20 and 90/45