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脱式计算.0.8×(12.5+

(1)0.8×(12.5+1.25)=0.8×12.5+0.8×1.25=10+1=11;(2)7.75×[20÷(3.24-3.04)=7.75×(20÷0.2)=7.75×100=775;(3)4.05÷0.81+2.4=5+2.4=7.4.

1

12.5×8÷12.5×8 =(12.5÷12.5)x(8x8) =1x64 =64

应该是 8.8×12.5 =11×0.8×12.5 =11×(0.8×12.5) =11×10 =110

12.5×7.8×0.8 =12.5×0.8×7.8 =10×7.8 =78

12.5×42×0.8 =(12.5×0.8)×42 =10×42 =420 3.8×5.6+4.4×3.8 =3.8×(5.6+4.4) =3.8×10 =38

12.5*(8-0.8)=12.5*8-12.5*0.8=100-10=90

(8+0.1)×12.5 =8×12.5+0.1×12.5 =100+12.5 =112.5

简便算12.5×61×8脱式计算怎么写? =12.5x8x61 =100x61 =6100

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