来自洪文学的问题
9999×7778+3333×6666用简便算法,
9999×7778+3333×6666用简便算法,
3回答
2020-06-25 00:24
9999×7778+3333×6666用简便算法,
9999×7778+3333×6666用简便算法,
9999×7778+3333×6666=9999×7778+9999×2222=9999×10000=99990000
步骤解说一下!
9999×7778+3333×6666=9999×7778+3333×(3×2222)=9999×7778+9999×2222=9999×(7778+2222)=9999×10000=99990000