(1+0.21+0.32)*(0.21+0.32+0.43)-(1+0.21+0.32+0.43)*(0.21+0.32)

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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)
(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)*(0.21+0.32+0.43)-(1+0.21+0.32+0.43)*(0.21+0.32)
(1+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)
=(1+0.21+0.32)*(0.21+0.32+0.43-0.21+0.32)-0.43*(0.21+0.32)
=(1+0.21+0.32)*0.43-0.43*(0.21+0.32)
=0.43*(1+0.21+0.32-0.21-0.32)
=0.43

令a=0.21+0.32+0.43
则1+0.21+0.32=a+1-0.43
1+0.21+0.32+0.43=a+1
0.21+0.32=a-0.43
原式=a(a+1-0.43)-(a+1)(a-0.43)
=a(a+1)-0.43a-a(a+1)+0.43(a+1)
=0.43(a+1)-0.43a
=0.43a+0.43-0.43a
=0.43

1.53*0.96-1.96*0.53=1.4688-1.0388=0.43

(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)*(0.21+0.32+0.43)-(1+0.21+0.32+0.43)*(0.21+0.32)要怎么简算, 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)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+223)-(1+0.228-0.21+0.2003)×﹙0.228-0.21)(能巧算的就巧算) (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)×(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 (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)*(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)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 (1+0.228-0.21)×(0.228-0.21+0.2003)-(1+0.228-0.21+0.2003)×(0.228-0.21)简便解法这是预初一的题,但是不要告诉我去用计算机去做, 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)x(0.228-0.221+0.2003)-(1+0.228-0.21+0.2003)x(0.228-0.21)怎么样巧算 巧算(1/110*2.1*0.54*55)/54*0.21*4又1/2 巧算(2-1/2)×(2-2/3)×(2-3/4)×……×(2-2002/2003)巧算:(2-1/2)×(2-2/3)×(2-3/4)×……×(2-2002/2003)(1+0.228-0.21)*(0.228-0.21+0.20030)-(1+0.228-0.21+0.2003)*(0.228-0.21)解方程:7(x-3)=9+X21-x=1.5(9+x)