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1.25×0.43×0.08的脱式计算

1.25×0.43×0.08 =1.25×0.08×0.43 =0.1×0.43 =0.043

0.43*1.8÷0.43*1.8 =(0.43÷0.43)*(1.8*1.8) =1*3.24 =3.24

2.47x0.8÷0.43+3.67 =1.976÷0.43+3.67 ≈4.6+3.67 =8.27

4.3x9.9+0.43 =4.3x(9.9+0.1) =4.3x10 =43

脱式计算2.8×1.43+0.57×2.8能简算的要简算。 解:采用分配律, 原式=2.8×1.43+0.57×2.8 =2.8x(1.43+0.57) =2.8x2 =5.6

(1)(415+89)÷4=415÷4+89÷4=115+29=3+1045=1345(2)56×320÷56×320=(56÷56)×(320×320)=1×9400=9400(3)512×23+512×43=512×(23+43)=512×2=56

(1)15×43%+85×0.43=15×0.43+85×0.43,=(15+85)×0.43,=100×0.43,=43;(2)79÷115+29×511=79×511+29×511,=(79+29)×511,=1×511,=511;(3)(12-13)×38÷25%=(36?26)×38÷14,=16×38×4,=14.

脱式怎么计算 2.8×1.43+0.57×2.8 =2.8×(1.43+0.57) =2.8×2 =5.6

(1)43÷[0.2+(3.4+15)×56]=43÷[0.2+3.6×56]=43÷[0.2+3]=43÷3.2=512;(2)[1-(38?14)]÷5.25=[1-18]÷5.25=78÷5.25=16;(3)(1-34×25)÷(14+38)=(1-310)÷(14+38)=710÷58=2825.

①545×1.6+545+545×7.4,=(1.6+1+7.4)×545,=10×295,=58;②2.8×43×17×0.7×527,=145×43×17×710×377,=145×43×(17×710)×377,=5615×110×377,=17375;③9999+999+99+9,=(10000-1)+(1000-1)+(100-1)+(10-1),=10000+1000+100+10-1-1-1...

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