0.4×8.1+0.4×1.6+0.3×0.4简便计算。

2025-05-17 18:08:49
推荐回答(1个)
回答1:

0.4×8.1+0.4×1.6+0.3×0.4
=0.4×(8.1+1.6+0.3)
=0.4×10
=4