Compare 10/42 and 9/40
10/42 is greater than 9/40
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 40 is 840
Next, find the equivalent fraction of both fractional numbers with denominator 840 - For the 1st fraction, since 42 × 20 = 840,
10/42 = 10 × 20/42 × 20 = 200/840 - Likewise, for the 2nd fraction, since 40 × 21 = 840,
9/40 = 9 × 21/40 × 21 = 189/840 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 200/840 > 189/840 or 10/42 > 9/40
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 20/42 and 9/40 10/42 and 18/40 10/84 and 9/40 10/42 and 9/80 30/42 and 9/40 10/42 and 27/40 50/42 and 9/40 10/42 and 45/40 70/42 and 9/40 10/42 and 63/40