999×7.78+333×6.66

999×111+333×667=333×(3×111)+333×667=333×333+333×667=333×(333+667)=333×1000=333000

提出来一个333再答：999*7.78+333*6.66=999*7.78+333*3*2.22=999*7.78+999*2.22=999*(7.78+2.22)=999*10=9990

333×334+999×222，=333×334+333×3×22，=333×（334+3×222），=333×（334+666），=333×1000，=333000．

999×222+333×334=333×3×222+333×334=333×666+333×334=333×（666+334）=333×1000=333000

"999×333=27×（111×111）=27×12321=332667"

999*779+333*666=3*333*779+333*3*222=999*779+999*222=999*(779+222)=999*1001=999000+999=999999我才二年级我都会

333*6.66+999*7.78=333*3*2.22+999*7.78=999*2.22+999*7.78=999*（2.22+7.78）=999*10=9990

999×7.78＋333×6.66=999×7.78+333×(3×2.22)=999×7.78+999×2.22=999×(7.78+2.22)=999×10=9990

能再问：怎么算再答：999*（167+222）再问：感谢你的启发！

999*7.78+333*6.66=999*7.78+333*3*2.22=999*7.78+999*2.22=999*(7.78+2.22)=999*10=9990

先拆后提取666*333+778*3*333=666*333+2334*333=（666+2334）*333=3000*333=999000

999×999+1999=999×(1000-1)+1999=999×1000-999+1999=999000+1000=1000000999×222+333×334=333x3x222+333x33

999*7.78+333*6.66=999*7.78+333*2.22*3=999*（7.78+2.22）=999*10=9990

999*7.78+333*6.66=999*7.78+333*3*2.22=999*7.78+999*2.22=999(7.78+2.22)=999*10=9990

寒樱暖暖为你又遇到这题了=999×778+222×3×333=999×778+222×999=999×（778+333）=999000（或在客户端右上角评价点【满意】）是我前进的动力!你的采纳也会给你

999×778+333×666=999×778+333×3×222=999×778+999×222=999×（778+222）=999×1000=99900020.09×37-200.9×1.9+20

5.97x2.6+0.597x75-597x0.001=5.97x2.6+5.97x7.5-5.97x0.1=5.97x(2.6+7.5-0.1)=5.97x10=59.7999*7.78+333*6

333*666+999*778=333（666+3*778）=333（666+2334）=333*3000=999000

333*333+999*889=333*3*111+999*889=999*111+999*889=999*(111+889)=999*1000=999000

333*333+999*889=333*3*111+999*889=999(111+889)=999000