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440×25+250×56简便计算

440×25+250×56 =440×25+25×560 =25×(440+560) =25×1000 =25000

440×25 250×56简便计算 440×25 250×56 =250*(44+56) =250*100 =25000

630×25+250×37 =630X25+25X370 =(630+370)X25 =1000X25 =25000

=25X4X8+250X4X8 =800+8000 =8800 ~希望对你有帮助,请及时点击【采纳为满意回答】按钮~ ~手机提问的朋友在客户端右上角评价点【满意】即可~ ~你的采纳是我前进的动力~~

将前后中相同的部分25提出来原式 =25(990+10*201) =25(990+2010) =25(3000) =75000

解:原式=25x4+250x4+4x8x125 =100+1000+4x1000 =1100+4000 =5100 分析:主要考察拆分法和分配律的运用。

25×50+250×5 解: 25×50+250×5 =250×5+250×5 =250×(5+5) =250×10 =2500

250x73+270x25 =25x730+270x25 =25x(730+270) =25x1000 =25000

(250-25)×8 =250×8-25×8 =2000-200 =1800

=1.3925-0.0391025 =1.3925-0.3925 =(1.39-0.39)25 =25

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