0.36x13.5x1.3怎样简便计算?

2024-12-15 23:00:30
推荐回答(1个)
回答1:

0.36=0.6x0.6
0.6x13.5x0.6x1.3
=8.1x0.6x1.3
=4.86x(1+0.3)
=4.86+1.458
=6.318