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脱式计算(能用简便方法的用简便方法计算)2.5×(6...

(1)2.5×(6+5×3.2)=2.5×(6+16)=2.5×22=55;(2)45×7.3+27×4.5=45×7.3+2.7×45=45×(7.3+2.7)=45×10=450; (3)5.8×101-5.8=5.8×(101-1)=5.8×100=580;(4)0.125×3.2×25=0.125×(8×0.4)×25=(0.125×8)×(0.4×25)=1×10=10;(5)[8.3...

(1)2.5×(6+9.728÷3.2)=2.5×(6+3.04)=2.5×9.04=22.6(2)45×7.3+27×4.5=45×(7.3+2.7)=45×10=450(3)0.125×3.2×25=0.125×8×0.4×25 =(0.125×8)×(0.4×25)=1×10=10(4)[8.3-(3.6+2.9)]÷0.72=[8.3-6.5]÷0.72=1.8÷0.72=2.5(5)(140+0...

你好: 谷哥22为您解答:5.64+2.6×3.7 =5.64+9.62 =15.26 望采纳,谢谢!!! 理由:有加减乘除的,先算乘除法,再算加减法。

(1)0.389×4×0.25,=0.389×(4×0.25),=0.389×1,=0.389;(2)4.02×3.02+4.02×6.98,=4.02×(3.02+6.98),=4.02×10,=40.2;(3)4.05÷0.81+2.4,=5+2.4,=7.4;(4)65.4÷2.5÷4,=65.4÷(2.5×4),=65.4÷10,=6.54;(5)86×9.9,=86×(10...

(1)13.6×3-40.6÷2,=40.8-20.3,=20.5;(2) 99×0.75+ 1 4 ×99 ,=99×(0.75+0.25),=99×1,=99;(3) ( 5 6 - 5 8 )×24 ,= 5 6 ×24- 5 8 ×24,=20-15,=5;(4) 121×100 1 121 ,=121×(100+ 1 121 ),=121×100+121× 1 121 ,=12100+1...

2.08×60 =2*60+0.08*60 =120+4.8 =124.8 ,2.5×0.6-1.8×0.5 =1.5-0.9 =0.6

①11.23-3.4+8.77-6.6=11.23+8.77-(3.4+6.6)=20-10=10;②5.4÷[0.68÷(1.2-1.03)]=5.4÷[0.68÷0.17]=5.4÷4=1.35;③(3.24×99+3.24)÷8.1 =[3.24×(99+1)]÷8.1=324÷8.1=40;④(18.4-3.75)÷12.5÷0.8=14.65÷12.5÷0.8=14.65÷(12.5×0.8)=14.65÷10...

(1)0.6×(3.6-2.4)=0.6×1.2=0.72(2)400÷25÷8+5×8=400÷(25×8)+40=400÷200+40=2+40=42(3)8×317÷[1÷(315-2.95)]=8×317÷[1÷(315-21920)]=8×317÷(1÷14)=8×317÷4=8×317×14=627(4)12.5×0.75-2.5×34+0.75=0.75×(12.5-2.5+1)=0.75×11=...

①42÷(5.25÷0.25)=42÷(5.25×4)=42÷21=2②0.4+12.6÷0.28×0.2=0.4+45×0.2=0.4+9=9.4③8.4-8.4×1.5÷1.8=8.4×(1- 5 6 )=8.4× 1 6 =1.4④0.27×99+0.27=0.27×(99+1)=0.27×100=27⑤2.5×3.2×0.125=2.5×(0.4×8)×0.125=(2.5×0.4)×(8×0.125)=1×1=...

①52.32-(6+3.06)×1.5=52.32-9.06×1.5=52.32-13.59 =38.73 ②72.6×0.3+0.3×27.4=0.3×(72.6+27.4)=0.3×100=30③[3.8-(1.26+0.34)]×0.45=(3.8-1.6)×0.45=2.2×0.45=0.99 ④11.79+7.65×2.4+10.64=11.79+18.36+10.64=11.79+29=40.79

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