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401乘25的简便运算.

400×25+25

=25(401-1) =25*400 =10000

0.25x401 =0.25x(400+1) =0.25x400+0.25x1 =100+0.25 =100.25

401一203简便计算 =401一(200+3) =401一200一3 =201一3 =198

简便方法计算 401x25 =400×25+25 =10000+25 =10025

401×乘92简便运算怎么写 401*62 =400*92+92 =36800+92 =36892

401×287 =(400+1)×287 =400×287+287 =114800+287 =115087

=125×(400+1)×18 =125×400×18+125×18 =50000×2×9+125×2×9 =900000+2250 =902250

401×80-80=(401-1)×80 =400×80 =32000

原式 =401x(100-1)-1 =401x100-401x1-1 =40100-401-1 =39699-1 =39698 或者 =(400+1)x99-1 =400x99+1x99-1 =39600+99-1 =39699-1 =39698 供参考。

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