Question

5.05-4.5+0.95201×55简便运算？

Answer 1

5.05-4.5+0.95201x 55=0.55+95.201x 0.55=0.55x （1+95.201）=0.55x 96.201=52.91055

Answer 2

5.05-4.5+0.95201×55
=0.55+0.95201×55
=55×（0.01+0.95201）
=55×0.96201
=55×1-55×0.03799
=55-55×0.04+55×0.00201
=55-2.2+55×0.002+55×0.00001
=52.8+0.22+0.00055
=53.02+0.00055
=53.02055