46*49+49*8简便算法怎么算
问题描述:
46*49+49*8简便算法怎么算
答
用乘法分配律呀!
原式=49×(46+8)
=49×54
答
49*(46+8)=49*52=(50-1)*(50+2)=2500+50-2=2548
答
46*49+49*8
=49*(46+8)
=(50-1)*54
=50*54-54
=270-54
=216
答
=49(46+8)
=(50-1)*54
=2700-54
=2646