If Jaylin has 100 pieces of candy and he splits it evenly between 5 friends, you can find the number of pieces each friend gets by dividing the total number of pieces by the number of friends:
\[ \text{Pieces per friend} = \frac{100 \text{ pieces}}{5 \text{ friends}} = 20 \text{ pieces} \]
So, each friend gets 20 pieces of candy.