You seem to be unaware of the fact that you could have obtained the answer much more easily and quickly by using the calculator that comes as part of your computer. The answer is 4513.
20+35+40+55+60+55+80=345
55 plus 553 is 608
180
The answer is 110.
-110
67 + 112 + 55 = 234
55 + 434 + 4 = 493
1 + 2 + 100 + 55 = 158
(-45) - (-55) *Minus plus is equals to minus.( -,+ = - ) minus minus is equal to plus (-,- = + ) and plus plus is equal to plus (+,+ = +) so the ans is that, (-45) +55 -45 + 55 (+10)ans Greater value sign has been used, which is 55 so the ans is +10.
110
110
10 + 55 + 99 + 66 + 102 = 332