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25x37+25x63的简便运算

25x37+25x63的简便运算 =25x(37+63) =25x100 =2500

25x37 =25x36 +25 =(25x4)x9 +25 =100x9+25 =900+25 =925

25×37-25×33 =25×(37-33) =25×4 =100

=37+25×40-25×3 =37+1000-75 =1000-38 =962

(56+44)X37=3700 25X40十+25x4=1100

原式 =(75+25)x37 =100x37 =370 供参考。

原式 =61x25x4+37x25 =61x100+36x25+1x25 =6100+9x4x25+25 =6100+9x100+25 =6100+900+25 =7000+25 =7025 或者 =61x4x25+37x25 =244x25+37x25 =(244+37)x25 =281x25 =280x25+1x25 =70x4x25+25 =70x100+25 =7000+25 =7025 供参考。

25×37×4 =25x4x37 =100x37 =3700 125×32x25 =(125x8)x(4x25) =1000x100 =100000 (14+28)×5 =21x(2x5) =210 15×202 =15x(200+2) =15x200+15x2 =3030 45×106+94×45 =45x(106+94) =45x200 =9000 417+138+182 =417+320 =737

65x37x125-37x25x54=37x(25x65x5-25x54)=37x25x(65x5-54)=37x25x(325-54)=37x25x271=250675

=25×4×37 =100×37 =3700

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