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括号32加五点六括号除以零点八的简便运算

(32+5.6)/0.8 =32/0.8+5.6/0.8 =40+7 =47

可以利用除法分配律的逆运算进行简便运算: (3.2+0.56)÷0.8 =3.2÷0.8+0.56÷...

5.4÷(0.3+0.6)÷0.8 =5.4÷0.9÷0.8 =6÷0.8 =7.5

7.2÷(6.7+0.8)×6 =7.2÷7.5×6 =24/25×6 =5.76

五点6×括号十二点5-8点五除以零点零八怎么用简便算法 五点6×括号十二点5-8点五除以零点零八 ...

=(¾×8×0.1)(12.5×2×0.2) =0.6×0.5 =0.3

(81.4-81.4×0.9)÷0.25 =81.4×(1-0.9)÷0.25 =81.4×0....

解:(2.6/1.89)/0.9 =(260/189)*(10/9) =2600/1701

(12.64.8)÷0.6中,12.6和4.8都是0.6的倍数.所以去括号就行了. 12.6÷0...

是5.8x(3.87-0.13)+4.2x3.741吗? 先算括号内3.87-0.13=3.74 ...

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