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1.25×0.43×0.08的脱式计算

5.4x(0.78-0.43) =5.4*0.35 =1.89

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

1. 4×102-2×49 =408-2×49 =408-98 =310 2. 25×(2+4) =25×2+25×4 =50+100 =150 3. 12×5+8 =60+8 =68 4. 99×101 =99×(100+1) =99×100+99×1 =9900+99 =9999 5. 25×(78×4) =25×4×78 =100×78 =7800 6. (25+12)×4 =25×4+12×4 =100+48 =148 7. ...

1.95.6*18+0.4*18 =(95.6+0.4)*18 =96*18 =1728 2.907*99+907 =907*(99+1) =907*100 =90700 3.0.6*143-0.6*43 =0.6*(143-43) =0.6*100 =60 4.6.5*8+3.5*8-47 =(6.5+3.5)*8-47 =80-47 =33 5.14*2.25+14*3.75 =(2.25+3.75)*14 =6*14 =84 6.3.5*0.8...

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

1. 0.4×125×25×0.8 =(0.4×25)×(125×0.8)=10×100=1000 2. 1.25×(8+10)=1.25×8+1.25×10 =10+12.5=22.5 3.9123-(123+8.8)=9123-123-8.8=9000-8.8=8991.2 4.1.24×8.3+8.3×1.76 =8.3×(1.24+1.76) =8.3×3=24.9 5.9999×1001=9999×(1000+1)=...

①9.8÷2.5÷0.4=9.8÷(2.5×0.4)=9.8÷1=9.8;②0.8×(0.175×1.25)=(0.8×1.25)×0.175=1×0.175=0.175;③16.8÷1.25÷0.8=16.8÷(1.25×0.8)=16.8÷1=16.8;④(34.28+45.43)÷0.5 =79.71÷0.5=159.42;⑤28.8×(4.8÷1.2)=28.8×4=115.2;⑥116.9÷0.7-85.6...

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

原式=7.43*(6.5-5.5) =7.43*1 =7.43

1题:原式=1/3-1/4+1/4-1/5+1/5-···+1/98-1/99 =1/3-1/99 =32/99 2题:原式=1.2*30*1.09+1.2×67.3 =1.2×(67.3+32.7) =1.2*100 =120 3题:原式=1.8*40*2.09-1.8*73.6 =1.8*(83.6-73.6) =1.8*10 =18 4题:原式=4*1.7*8*2.1*19.3*8*4*0.1 =4*8*...

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