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999乘以778加上333乘以334

999乘以778加333乘以666=999乘以778加333乘以3乘以222=999乘以(778加222)=999乘以1000=999000

您好:999乘以222再加333乘以334=333x3x222+333x334=333x(666+334)=333x1000=333000 如果本题有什么不明白可以追问,如果满意记得采纳 如果有其他问题请另发或点击向我求助,答题不易,请谅解,谢谢.祝学习进步!

999*778+333*666=999*778+333*(3*222)=999*778+333*3*222=999*778+999*222=999*(778+222)=999*1000=999000

999X222+333X334=333X3X222+333X334=333X(3X222+334)=333X1000=333000

(333*3)*222+333*334 =333*(222*3)+333*334 =333*(222*3+334) =333*1000 =333000

999*222+333*334 =9*111+2*111+3*111+334 =111*(9+2+3)+334 =111*14+334 =1554+334 =1888

999乘778加333乘666 解:简便计算=999x778+333x(222x3)=999x778+999x222 运用乘法分配律=999(778+222)=999x1000=999000 祝学习进步.

333*334+999*222=333*334+333*3*222=333*334+333*666=333*(334+666)=333000

原式=222x(1000-1)+333x300+333x30+333x4=222000-222+99900+9990+1332=222000+(99900+100)+(9990+10)+1000=222000+100000+10000+1000=333000

999乘778加333乘666 =333乘3乘778+333乘666 =333乘2334+333乘666 =333乘3000 =999000

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