PLEAE HELP I WILL GIVE BRAINLIST can someone please help with 4,5,6 and use the box method on a paper please I need this ( show work ) please!

PLEAE HELP I WILL GIVE BRAINLIST Can Someone Please Help With 456 And Use The Box Method On A Paper Please I Need This Show Work Please class=

Answer :

All the answers with workings are in those following pictures.
View image RESHMA87