Hey there!
This is a simple multiplication problem.
If each player gets 13 pairs of socks, and there are 21 players, we multiply 13 by 21.
The problem 13 x 21 can be split up into four smaller and easier problems to look like this:
(10 x 20) + (10 x 1) + (3 x 20) + (3 x 1)
13 can be split up into 10 and 13, while 21 gets split up into 20 and 1.
Multiply each together.
200 + 10 + 60 + 3
Add the numbers together.
273
In total, there are 273 pairs of socks.
Hope this helps!
