Compare 18/45 and 10/12
18/45 is smaller than 10/12
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 12 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 45 × 4 = 180,
18/45 = 18 × 4/45 × 4 = 72/180 - Likewise, for the 2nd fraction, since 12 × 15 = 180,
10/12 = 10 × 15/12 × 15 = 150/180 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 72/180 < 150/180 or 18/45 < 10/12
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