Ram needs to buy oranges for $5$ families. He needs to give $4$ oranges to each family. How many oranges do Ram need to buy for all $5$ families?

Given:
Number of families $=5$
Number of oranges to be given to each family $=4$
To find:
The total number of oranges Ram needs to buy
Solution:
Adding the number of oranges $5$ times we get.

$4+4+4+4+4=20$
Multiplication involves the repeated number of addition.
The answer can also be given by multiplication.
Multiply the number of oranges with the number of families,
$4\times 5=20$.
Therefore, the correct option is A.