Question

75.9 - 2.65

10.24
102.4
78.55
79.55

So, it took me awhile but I think I solved it? Though it would be great if someone can tell me if I did it the correct way or not?

75.9 + 2.65 =
75.90 + 2.65 =
90 + 60 = 155
75 + 2 + 1 = 78
= 78.55

Answer 1

75.9-2.65=73.65
90+60=150
75+2+1=78