Pokemon number game

It's simple.
The first person (me) says a Pokemon.
The next one says the number, then says that same number and then something like this: -3 or +6

Example:
Me: Bulbasaur
Someone: number 1! 1+5.
Someone2: 1+5 is 6 so that's Charizard! Now, 6x2.
So on...

Just don't make the number exceed 649.


I'll start.
First up is Pikachu!

Pikachu, #25!

25x6=150, mewtwo!

Which pokemon is 150x3?

9, good ol' Blastoise

9+9

18, never forget the original bird Pidgeot

18²? (or 18x18 for those who doesn't understand :P)

18² = 324, Torkoal!
324 divided by 2= ??

That's Furret! Number 164!
Now try 164 + 83! Hard right?

164+83= 247, Pupitar!
now try 247-245!

247-245 = 2, Ivysaur

2 x 86?

172, cute little Pichu

172/4? (Thats divided if you don't know :P)

Oddish number 43!
Let's do it a bit harder.
43+5-3

43+5-3= 45,Vileplume!
now try 45-40*5!

45-40 * 5 = 25
That's back to Pikachu!
What is 25/5 ! * 25 + 25 / 5
! = Factorial
If you don't understand, just ask me for help =D

Umm.... it's not 10..... In fact, it was a whole numbre, not a decimal.
Do them in the order they are written instead of BIDMAS, should have made that clear, sorry.

Too much math in my head... I can't find a calculator and I'm too lazy to type it into google...

605 is Elgyem.

Square Root of (605/5)

Don't want to find root sign...

Square Root of (605/5)= 11 , Metapod!
now try Square Root of (45/5)!