(1+0.23+0.33)*(0.23+0.33+0.43)-(1+0.23+0.33+0.43)*(0.23+0.33)如何简便计算
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(1+0.23+0.33)*(0.23+0.33+0.43)-(1+0.23+0.33+0.43)*(0.23+0.33)如何简便计算
把1+0.23+0.33 和 0.23+0.33 看做一个整体,假设分别为a、b那题目可以如下
a*b+a*0.43-a*b-0.43*b
=0.43(a-b)
=0.43*1
=0.43
(1+0.23+0.33)*(0.23+0.33+0.43)-(1+0.23+0.33+0.43)*(0.23+0.33)
=(0.23+0.33+0.43)+(0.23+0.33)*(0.23+0.33+0.43)-(0.23+033)-(0.23+0.33+0.43)*(0.23+0.33)
=(0.23+0.33+0.43)-(0.23+033)
=0.43
(1+0.23+0.33)*(0.23+0.33+0.43)-(1+0.23+0.33+0.43)*(0.23+0.33)
=(1+0.23+0.33)*(0.23+0.33+0.43)-(1+0.23+0.33)*(0.23+0.33)-0.43*(0.23+0.33)
=(1+0.23+0.33)*[(0.23+0.33+0.43)-(0.23+0.33)]-0.43*(0.23+0.33)
=(1+0.23+0.33)*0.43-0.43*(0.23+0.33)
=0.43*[(1+0.23+0.33)-(0.23+0.33)]
=0.43*1
=0.43
(1+0.23+0.33)*(0.23+0.33+0.43)-(1+0.23+0.33+0.43)*(0.23+0.33)如何简便计算
0.13+0.23+0.33+.+0.93简算
(1+0.23+0.34)x(0.23+0.34+0.65)-(1+0.23+0.34+0.65)x(0.23+0.(1+0.23+0.34)x(0.23+0.34+0.65)-(1+0.23+0.34+0.65)x(0.23+0.
简便计算:(1+0.23+0.34)*(0.23+0.34+0.65)-(1+0.23+0.34+0.65)*(0.23+0.34)
(1+0.23+0.34)*(0.23+0.34+0.65)-(1+0.23+0.34+0.65)*(0.23+0.34的简便算是多少
简便计算(1+0.23+0.34)*(0.23+0.34+0.65)-(1+0.23+0.34+0.65)*(0.23+0.34)
(1+0.23+0.34)*(0.23+0.34+0.65)-(1+0.23+0.34+0.65)*(0.23+0.34的简便算是多少
(1+0.23+0.34)*(0.23+0.34+0.65)-(1+0.23+0.34+0.65)*(0.23+0.34)
巧算(1+0.23+0.34)*(0.23+0.34+0.65)-(1+0.23+0.34+0.65)*(0.23+0.34)
(1+0.23+0.34)*(0.23+0.34+0.65)-(1+0.23+0.34+0.65)*(0.23+0.34))
求解(1+0.12+0.23)*(0.12+0.23+0.34)-(1+0.12+0.23+0.34)*(0.12+0.23)=?
简便运算 (1+0.12+0.23)x(0.12+0.23+0.34)-(1+0.12+0.23+0.34)x(0.12+0.23)
(1+0.12+0.23)*(0.12+0.23+0.34)-(1+0.12+0.23+0.34)*(0.12+0.23)=
(1+0.23+0.34)*(0.23+0.34+0.45)-(1+0.23+0.34+0.45)*(0.23+0.34)简便运算
(1+0.12+0.23)×(0.12+0.23+0.34)- (1+0.12+0.23+0.34)×(0.12+0.23).
(1+0.12+0.23)X(0.12+0.23+0.34)-(1+0.12+0.23+0.34)X(0.12+0.23)=?
(1+0.23+0.34)x(0.23+0.34+0.78)-(1+0.23+0.34+0.78)x(0.23+0.34)
(1+0.12+0.23)乘(0.12+0.23+0.34)_(1+0.12+0.23+0.34)乘(0.12+0.23)