2.46*0.8+1.23*0.4...怎么简算
问题描述:
2.46*0.8+1.23*0.4...怎么简算
答
2.46*0.8+1.23*0.4
=1.23*2*0.8+1.23*0.4
=1.23*(1.6+0.4)
=1.23*2
=2.46