Compare 7/45 and 18/70
7/45 is smaller than 18/70
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 70 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 45 × 14 = 630,
7/45 = 7 × 14/45 × 14 = 98/630 - Likewise, for the 2nd fraction, since 70 × 9 = 630,
18/70 = 18 × 9/70 × 9 = 162/630 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 98/630 < 162/630 or 7/45 < 18/70
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/45 and 18/70 7/45 and 36/70 7/90 and 18/70 21/45 and 18/70 7/45 and 54/70 35/45 and 18/70 7/45 and 90/70 49/45 and 18/70