Calculate 3/7 of 28: Finding Female Students in a Class

Let's write the following exercise, we'll multiply the fraction by the number of students:

$\frac{3}{7}\times28$

Let's multiply the numerator by 28:

$\frac{3\times28}{7}$

Let's solve the exercise in the numerator, we'll break down 28 into a smaller multiplication exercise:

$\frac{3\times7\times4}{7}=$

Let's reduce the 7 in the numerator and denominator of the fraction and we'll get:

$3\times4=12$