2.5×(8+0.4)6.4+3.6×1.5 35-35×0.7简便计算能简便的要简便。

2025-01-21 04:53:26
推荐回答(1个)
回答1:

2.5×(8+0.4)
=2.5x8+2.5x0.4
=20+1
=21
6.4+3.6×1.5
=6.4+3.6x5x0.3
=6.4+18x0.3
=6.4+5.4
=11.8
35-35×0.7
=35x(1-0.7)
=35x0.3
=10.5