脱式计算（能简便的就用简便方法计算）．2.7+7.3×1.52.5×0.32×12.517.68÷5.2+2.7×1.53.66×0.8+0.34×0.8-0.835.6-5×1.739.6×28.5+0.285×40．
第1个回答 2014-08-25
（1）2.7+7.3×1.5
=2.7+10.95
=13.65
（2）2.5×0.32×12.5
=（2.5×4）×（0.8×12.5）
=10×10
=100
（3）17.68÷5.2+2.7×1.5
=3.4+4.05
=7.45
（4）3.66×0.8+0.34×0.8-0.8
=（3.66+0.34-1）×0.8
=3×0.8
=2.4
（5）35.6-5×1.73
=35.6-8.65
=26.95
（6）9.6×28.5+0.285×40
=9.6×28.5+28.5×0.4
=（9.6+0.4）×28.5
=10×28.5
=285本回答被提问者采纳
=2.7+10.95
=13.65
（2）2.5×0.32×12.5
=（2.5×4）×（0.8×12.5）
=10×10
=100
（3）17.68÷5.2+2.7×1.5
=3.4+4.05
=7.45
（4）3.66×0.8+0.34×0.8-0.8
=（3.66+0.34-1）×0.8
=3×0.8
=2.4
（5）35.6-5×1.73
=35.6-8.65
=26.95
（6）9.6×28.5+0.285×40
=9.6×28.5+28.5×0.4
=（9.6+0.4）×28.5
=10×28.5
=285本回答被提问者采纳
