计算，能简算的要简算3.6×20193.7×0.32+93.7×0.6821÷0.25÷0.41.25×3.2×0.814.64+3.7×2.80.94×2.5-0.45．

Question

计算，能简算的要简算 3.6×201	93.7×0.32+93.7×0.68
21÷0.25÷0.4	1.25×3.2×0.8
14.64+3.7×2.8	0.94×2.5-0.45．

Answer 1

（1）3.6×201
=3.6×（200+1）
=3.6×200+3.6
=720+3.6
=723.6；

（2）93.7×0.32+93.7×0.68
=93.7×（0.32+0.68）
=93.7×1
=93.7；
         
（3）21÷0.25÷0.4
=21÷（0.25×0.4）
=21÷0.1
=210；

（4）1.25×3.2×0.8
=1.25×0.8×3.2
=1×3.2
=3.2；
      
（5）14.64+3.7×2.8 
=14.64+10.36
=25；

（6）0.94×2.5-0.45．
=2.35-0.45
=1.9．