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25×37简便计算

简便计算 25×37+75×21 =25×(37+3×21) =25×100 =2500

25×37+37×11-36×27 =(25+11)×37-36×27 =36×37-36×27 =36×(37-27) =36×10 =360

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

原式 =(36+1)x25 =36x25+1x25 =9x4x25+25 =9x100+25 =900+25 =925 供参考。

=25×(4×9+1)+17×2×(25+3) =25×4×9+25×1+17×2×25+17×2×3 =100×9+25+17×50+17×6 =900+25+850+102 =1877

25×37×4 =(25×4)×37 =100×37 =3700

=25×4×37=100×7=3700

189*25+37*75=189*25+37*3*25=25*(189+37*3)=25*(189+111)=25*300=7500

=4×25×0.37 =100×0.37 =37

1500-500÷25x37 =1500-20×37 =1500-740 =760

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