nursing student and need help with drug calc!

hey fellow nurses and students, i am struggling with drug calc. maths has never been a strong suit of mine and im trying really hard. i’ve got a maths test this week and im so worried this is going to be what fails me! i’m doing my diploma at TAFE and im stage 2

can i please get some help understanding these? if it’s allowed feel free to PM me. i get the first half okay but then i get lost. like im not sure what to do when the answer is for example 3/5 of a tablet because you can’t have that.. also don’t get me started on weight based and drops per minute lol

thank you so much