简便计算:(1)10.125x8-0.51x4 (2)1+0.45除0.9-0.75
问题描述:
简便计算:(1)10.125x8-0.51x4 (2)1+0.45除0.9-0.75
答
(1)10.125x8-0.51x4
=81-2.04
=78.96
(2)1+0.45除0.9-0.75
=1+0.5-0.75
=0.75