(1+0.21+0.32)*(0.21+0.32+0.43)-(1+0.21+0.32+0.43)*(0.21+0.32)要怎么简算,
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(1+0.21+0.32)*(0.21+0.32+0.43)-(1+0.21+0.32+0.43)*(0.21+0.32)要怎么简算,(1+0.21+0.32)*(0.21+0.32+0.43)-(1
(1+0.21+0.32)*(0.21+0.32+0.43)-(1+0.21+0.32+0.43)*(0.21+0.32)要怎么简算,
(1+0.21+0.32)*(0.21+0.32+0.43)-(1+0.21+0.32+0.43)*(0.21+0.32)要怎么简算,
(1+0.21+0.32)*(0.21+0.32+0.43)-(1+0.21+0.32+0.43)*(0.21+0.32)要怎么简算,
(1+0.21+0.32)*(0.21+0.32+0.43)-(1+0.21+0.32+0.43)*(0.21+0.32)=(1)*(0.21+0.32+0.43)+（0.21+0.32)*(0.21+0.32+0.43)-(1)*(0.21+0.32)-（0.21+0.32+0.43）*(0.21+0.32)=0.43
(1+0.21+0.32)*(0.21+0.32+0.43)-(1+0.21+0.32+0.43)*(0.21+0.32)要怎么简算,
（1+0.21+0.32）*（0.21+0.32+0.43）-（1+0.21+0.32+0.43）*（0.21+0.32）
计算(1+0.21+0.32)x(0.21+0.32+0.43)-(1+0.21+0.32+0.43)x(0.21+0.2)
计算(1+0.21+0.32)x(0.21+0.32+0.43)-(1+0.21+0.32+0.43)x(0.21+0.2)
(1+0.228-0.21)*(0.228-0.21+0.2003)-(1+0.228-0.21+0.2003)*(0.228-0.21)巧算?写清思路
(1+0.228-0.21)*(0.228-0.21+0.2003)-(1+0.228-0.21+0.2003)*(0.228-0.21)要求简便运算
（1＋0.228-0.21）x(0.228-0.21+0.2003)-(1+0.228-0.21+0.2003)x(0.228-0.21)
(1+0.228-0.21)*(0.228-0.21+0.2003)-(1+0.228-0.21+0.2003)*(0.228-0.21)如何巧算?写清巧算步骤．
(1+0.228-0.21)×（0.228-0.21+223）-（1+0.228-0.21+0.2003）×﹙0.228-0.21）（能巧算的就巧算）
(1+0..228-0.21)x(0.228-0.21+0.2003)-(1+0.228-0.21+0.2003)x(0.228-0.21)简便方法计算简便方法
0.21其中21循环+0.21其中1循环+0.21=?用分数表示
6.5*0.21
(1＋0.228-0.21）×（0.228-0.21＋0.2003)-（1＋0.228-0.21＋0.2003）×（0.228-0.21）为什么这么做啊(1＋0.228-0.21）×（0.228-0.21＋0.2003)-（1＋0.228-0.21＋0.2003）×（0.228-0.21）=(1＋0.228-0.21）×（0.228-0.21)-(1＋0.228-
(1+0.228-0.21)x(0.228-0.221+0.2003)-(1+0.228-0.21+0.2003)x(0.228-0.21)怎么样巧算
（1+0.228-0.21）×（0.228-0.21+0.2003）-（1+0.228-0.21+0.2003）×（0.228-0.21）简便运算,要写出具体过程
2.5*0.4+0.21*3
巧算0.39×0.21
0.21:0.49化简