Question

Which would you use to compare 10 / 12 and 2 / 5 a common numerator or common denominator?

Answer 1

We can compare 2 fractions by means of the cross multiplication method. In our case, we have

since 50 is greater than 24 then 10/12 is greater than 2/5:

$\frac{10}{12}>\frac{2}{5}$