7.05×37+65×7.05-7.05简算
问题描述:
7.05×37+65×7.05-7.05简算
答
7.05×37+65×7.05-7.05
=7.05×(37+65-1)
=7.05×101
=7.05×(100+1)
=7.05×100+7.05
=705+7.05
=712.05