Compare 21/12 and 5/40
1st number: 1 9/12, 2nd number: 5/40
21/12 is greater than 5/40
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 40 is 120
Next, find the equivalent fraction of both fractional numbers with denominator 120 - For the 1st fraction, since 12 × 10 = 120,
21/12 = 21 × 10/12 × 10 = 210/120 - Likewise, for the 2nd fraction, since 40 × 3 = 120,
5/40 = 5 × 3/40 × 3 = 15/120 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 210/120 > 15/120 or 21/12 > 5/40
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/12 and 5/40 21/12 and 10/40 21/24 and 5/40 21/12 and 5/80 63/12 and 5/40 21/12 and 15/40 21/36 and 5/40 21/12 and 25/40 21/60 and 5/40 21/12 and 35/40 21/84 and 5/40