作业帮0.12×38.7×50的简便计算怎么写?
来源：学生作业帮助网 编辑：作业帮 时间：2024/05/05 15:32:27
0.12×38.7×50的简便计算怎么写?
0.12×38.7×50的简便计算怎么写?
0.12×38.7×50的简便计算怎么写?
0.12×38.7×50
=0.12×50×38.7
=0.06×100×38.7
=6×38.7
=232.2
0.12×38.7×50
=0.12*50*38.7
=6*38.7
=6*(38+0.7)
=6*38+0.7*6
=228+4.2
=232.2
=0.12*38.7*50
=0.12*50*(40-1.3)
=6*40-6*1.3=240-7.8
=232.2
0.12×38.7×50
=（0.1+0.02）×38.7×50
=0.1×38.7×50+0.02×38.7×50
=38.7×5+38.7×1
=38.7×6
=232.2