999*778+333*666等于多少?
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![999*778+333*666等于多少?](/uploads/image/z/165903-15-3.jpg?t=999%2A778%2B333%2A666%E7%AD%89%E4%BA%8E%E5%A4%9A%E5%B0%91%3F)
999*778+333*666等于多少?
999*778+333*666等于多少?
999*778+333*666等于多少?
999*778+333*666 = 999 000
先乘除后加减
999×778+333×666
=999×778+333×(3×222)
=999×778+333×3×222
=999×778+999×222
=999×(778+222)
=999×1000
=999000