A number sequence is a set of numbers defined by a rule.

For each number sequence, find the next three terms (separated by commas) as well as the $100^{th}$ term.
For example: $1,2,3,4,5,\fbox{6,7,8}\ldots\fbox{100}$

$2,4,6,8,10,$ Check $\ldots$ Check Check

$-4,-1,2,5,8,$ Check $\ldots$ Check Check

$100,89,78,67,56,$ Check $\ldots$ Check Check

$1,4,16,64,256,$ Check $\ldots$ Check *Write the 100th term in the form $a^b$ Check

$1,-3,9,-27,81,$ Check $\ldots$ Check *Write the 100th term in the form $\left(-a\right)^b$ Check

$9,109,209,309,409,$ Check $\ldots$ Check Check

$2,6,12,20,30,$ Check $\ldots$ Check Check

$3,8,15,24,35,$ Check $\ldots$ Check Check

$1,\frac{1}{2},\frac{1}{4},\frac{1}{8},\frac{1}{16},$ Check $\ldots$ Check *Write the 100th term in the form $\frac{a}{b^c}$ Check

$4,16,36,64,100,$ Check $\ldots$ Check Check

$4,20,64,176,448,$ Check $\ldots$*You don't need to find the 100th term Check

$\frac{1}{2},\frac{1}{2},\frac{3}{8},\frac{1}{4},\frac{5}{32},$ Check $\ldots$*You don't need to find the 100th term Check

$1,1,2,3,5,8,13,21,$ Check $\ldots$*You don't need to find the 100th term Check

[challenge] $2,6,7,5,0,-8,-19,$ Check $\ldots$*You don't need to find the 100th term Check

[challenge] $2,3,3,5,10,13,39,43,172,177,$ Check $\ldots$*You don't need to find the 100th term Check

[challenge] $1,11,21,1211,111221,312211,13112221,$ Check $\ldots$*You don't need to find the 100th term Check