计算(12345+23451+34512+45123+51234)/(1+2+3+4+5)脱式,简便计算,急.
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计算(12345+23451+34512+45123+51234)/(1+2+3+4+5)脱式,简便计算,急.
计算(12345+23451+34512+45123+51234)/(1+2+3+4+5)脱式,简便计算,急.
计算(12345+23451+34512+45123+51234)/(1+2+3+4+5)脱式,简便计算,急.
(12345+23451+34512+45123+51234)/(1+2+3+4+5)
=(1+2+3+4+5)X11111/(1+2+3+4+5)
=(1+2+3+4+5)/(1+2+3+4+5)X11111
=1X11111
=11111
(12345+23451+34512+45123+51234)/(1+2+3+4+5)
=【10000×(1+2+3+4+5)+1000×(1+2+3+4+5)+100×(1+2+3+4+5)
+10×(1+2+3+4+5)+1×(1+2+3+4+5)】/(1+2+3+4+5)
=(11111)×(1+2+3+4+5)÷(1+2+3+4+5)
=11111
(12345+23451+34512+45123+51234)/(1+2+3+4+5)