下列各题怎样简便就怎样算．
3.7×1.4×0.05 72×0.81+10.4 1.4×25+3.45
1.5×102 1.25×0.7×0.8 2.7×3.7+0.37×73
8.7×99 0.8×（12.5﹣1.25） 1.25×0.4×80×2.5．
下列各题怎样简便就怎样算．
3.7×1.4×0.05 72×0.81+10.4 1.4×25+3.45
1.5×102 1.25×0.7×0.8 2.7×3.7+0.37×73
8.7×99 0.8×（12.5﹣1.25） 1.25×0.4×80×2.5．
=
×
= 20%÷
=
×30%= 3.5+1.5= 0.5×
+
=
= 2.4÷
=
×
= 80×40%= 21÷
=
﹣
×5=
×18×
=
+
=
×12= 1÷5%= 1﹣0.625=
=
=
×
=
=
=
×
=
+
=
×3=
×
×
=
÷
=
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