作业帮(1+0.12+0.34)*(0.12+0.34+0.56)-(1+0.12+0.34+0.56)*(0.12+0.34)用简便算法怎么算急!
来源：学生作业帮助网 编辑：作业帮 时间：2024/11/15 13:32:00
(1+0.12+0.34)*(0.12+0.34+0.56)-(1+0.12+0.34+0.56)*(0.12+0.34)用简便算法怎么算急!
(1+0.12+0.34)*(0.12+0.34+0.56)-(1+0.12+0.34+0.56)*(0.12+0.34)用简便算法怎么算急!
(1+0.12+0.34)*(0.12+0.34+0.56)-(1+0.12+0.34+0.56)*(0.12+0.34)用简便算法怎么算急!
减号前后的等式分别分拆为：
(1+0.12+0.34)*(0.12+0.34+0.56)
=(1+0.12+0.34)*(0.12+0.34)+(1+0.12+0.34)*0.56
(1+0.12+0.34+0.56)*(0.12+0.34)
=(1+0.12+0.34)*(0.12+0.34)+0.56*(0.12+0.34)
两个相减 等式简化为
(1+0.12+0.34)*0.56-0.56*(0.12+0.34)
=1*0.56+(0.12+0.34)*0.56-0.56*(0.12+0.34)
=0.56
最后得到答案 0.56
(1+a)b-a(1+b)=b+ab-a-ab=b-a
就说到这了
a+b=b+a
(a+b)+c=a+(b+c)
ab=ba
(ab)c=a(bc)
a(b+c)=ab+ac
你可能就学到这吧
这些是要记好的
用计算机算
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+0.34)X(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+0.12+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+0.12+0.23)乘(0.12+0.23+0.34)_(1+0.12+0.23+0.34)乘(0.12+0.23)
(1+0.12+0.34)*(0.12+0.34+0.56)-(1+0.12+0.34+0.56)*(0.12+0.34)用简便算法怎么算急!
(1+0.12+0.34)x(0.12+0.34+0.56)-(1+0.12+0.34+0.56)x(0.12+0.34)要简便计算
(1+0.12+0.34)(0.12+0.34+0.57)-(1+0.12+0.34+0.57)(0.12+0.34)怎么用简便方法计算
(1+0.12+0.23)x(0.12+0.23+0.34)-(1+0.12+0.23+0.34)x(0.12+0.23)等于几?用简便方法计算!
奥数简便运算（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）*（0.12+0.23+0.34）-（1+0.12+0.23+0.34）*（0.12+0.23）=简便方法
小数的简便运算:（1+0.12+0.23）×（0.12+0.23+0.34）—（1+0.12+0.23+0.34)×（0.12+0.23）
求（1+0.12+0.34）乘（0.12=0.34=0.56）-（1=0.12=0.34=0.56）乘（0.12+0.34）的
14.5*（0.12+0.23+0.34）-（0.12+0.23+0.34+1）*4.5的简算
有两道算术题要简算(1) 20042005*20052004-20042004*20052005(2) (1+0.12+0.23)*(0.12+0.23+0.34)-(1+0.12+0.23+0.34)* (0.12+0.73)
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） 用字母方法