Question

104减去负3.6加上正5.2的和减去负4.3的和减去负105的和怎样做?

Answer 1

[104-(-3.6)+5.2]-(-4.3)]-(-105)

=[(104+3.6+5.2)+4.3]+105

=(112.8+4.3)+105

=117.1+105

=222.1