0.16*378+8.4*37.8简便计算
问题描述:
0.16*378+8.4*37.8简便计算
答
原式=0.16*378+0.84*378
=(0.16+0.84)*378
=1*378
=378
答
0.16*378+8.4*37.8
=1.6×37.8+8.4×37.8
=(1.6+8.4)×37.8
=378
不懂可以问!