Compare 30/21 and 70/4
1st number: 1 9/21, 2nd number: 17 2/4
30/21 is smaller than 70/4
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 4 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 21 × 4 = 84,
30/21 = 30 × 4/21 × 4 = 120/84 - Likewise, for the 2nd fraction, since 4 × 21 = 84,
70/4 = 70 × 21/4 × 21 = 1470/84 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 120/84 < 1470/84 or 30/21 < 70/4
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/21 and 70/4 30/42 and 70/4 30/21 and 70/8 90/21 and 70/4 30/63 and 70/4 30/21 and 70/12 30/21 and 70/20 30/21 and 70/28