0.36乘3.6乘9.9怎么简算
问题描述:
0.36乘3.6乘9.9怎么简算
答
0.36×3.6×9.9
=1.296×(10-0.1)
=1.296×10-1.296×0.1
=12.96-0.1296
=12.8496