Compare 21/18 and 5/40
1st number: 1 3/18, 2nd number: 5/40
21/18 is greater than 5/40
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 40 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 18 × 20 = 360,
21/18 = 21 × 20/18 × 20 = 420/360 - Likewise, for the 2nd fraction, since 40 × 9 = 360,
5/40 = 5 × 9/40 × 9 = 45/360 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 420/360 > 45/360 or 21/18 > 5/40
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