How Stupid are you?No calculators!!!!!!!!

How Stupid are you really, are you as stupid as a fish?

1 (very easy)What is 22x10?
2 (easy)What is 23x1+1?
3 (hard)What is 99+99x34
4 (easy)What is 34-34+34-34+34?
5 (medium) What is 99+99-198?