Help With Carpet Installation. What Size Cuts Will I Need?

i have a 18′x19′ foot room, 13′x16′ room a hallway that is 4′x19′.
i was thinking of doing two 12×19 foot sections to cover the first room and the hallway. a 12×16 and whats left from the hallway to do the remaining 1×16. is this correct.
so total rooms=
master bedroom 12×13
2nd bedroom 12×12
3rd bedroom 12×12
living room 18×19
hallway 4×19