Compare 21/30 and 70/64
1st number: 21/30, 2nd number: 1 6/64
21/30 is smaller than 70/64
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 64 is 960
Next, find the equivalent fraction of both fractional numbers with denominator 960 - For the 1st fraction, since 30 × 32 = 960,
21/30 = 21 × 32/30 × 32 = 672/960 - Likewise, for the 2nd fraction, since 64 × 15 = 960,
70/64 = 70 × 15/64 × 15 = 1050/960 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 672/960 < 1050/960 or 21/30 < 70/64
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/30 and 70/64 21/60 and 70/64 63/30 and 70/64 21/90 and 70/64