Add and Subtract Mixed Numbers: exemplo 4.81

We will use fraction circles, whole circles for the whole numbers and $\frac{1}{3}$ pieces for the fractions.

two wholes and one $\frac{1}{3}$
plus one whole and two $\frac{1}{3}$s
sum is three wholes and three $\frac{1}{3}$s

This is the same as $4$ wholes. So, $2\frac{1}{3}+1\frac{2}{3}=4.$