0.27+6.3*0.9怎么简便运算
问题描述:
0.27+6.3*0.9怎么简便运算
答
0.27+6.3*0.9
=0.9*0.3+6.3*0.9
=0.9*(6.3+0.3)
=(1-0.1)*6.6
=6.6-0.66
=5.94