10-5 ,23+7,45+6,580-580.

Question

10-5 ,23+7,45+6,580-580.

Answer 1

10-5,23+7,45+6,580-580=-561.2

Answer 2

10-5,23+7,45+6,580-580=10+(-5,23)+7,45+6,580+(-580)=-571,2