2.4*0.19+0.24*8.1如何简便计算
问题描述:
2.4*0.19+0.24*8.1如何简便计算
答
=0.24×10×0.19+0.24×8.1
=0.24×1.9+0.24×8.1
=0.24×(1.9+8.1)
=0.24×10
=2.4