105*35-5*34怎样简便算?
来源:学生作业帮助网 编辑:作业帮 时间:2024/06/27 10:43:25
![105*35-5*34怎样简便算?](/uploads/image/z/183161-65-1.jpg?t=105%2A35-5%2A34%E6%80%8E%E6%A0%B7%E7%AE%80%E4%BE%BF%E7%AE%97%3F)
105*35-5*34怎样简便算?
105*35-5*34怎样简便算?
105*35-5*34怎样简便算?
原式=105×(34+1)-5×34
=105×34-5×34+105
=(105-5)×34+105
=3400+105
=3505
小弟弟,这里用了乘法分配律,你应该学了
=105*(34+1)-5*34
=105*34+105*1-5*34
=(105-5)*34+105*1
=100*34+105
=3400+105
=3505
(100+5)*5-5(35-1)展开 得3505
3505
原式=105*(34+1)-5*34
=(105-5)*34+105
=3400+105
=3505