What should come in place of the question mark (?) in the following questions?
$$5\frac{1}{5}+2\frac{3}{5}+1\frac{2}{5}=?$$
$$\frac{4}{5}\times2\frac{3}{4}\div\frac{5}{8}=?$$
What approximate value should come in place of the question mark (?) in the following questions ?
(you are not expected to calculate the exact value)
