动脑筋:9999*7778+3333*6666 用简便方法计算,最后得数是99990000
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![动脑筋:9999*7778+3333*6666 用简便方法计算,最后得数是99990000](/uploads/image/z/204315-51-5.jpg?t=%E5%8A%A8%E8%84%91%E7%AD%8B%EF%BC%9A9999%2A7778%2B3333%2A6666+%E7%94%A8%E7%AE%80%E4%BE%BF%E6%96%B9%E6%B3%95%E8%AE%A1%E7%AE%97%2C%E6%9C%80%E5%90%8E%E5%BE%97%E6%95%B0%E6%98%AF99990000)
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动脑筋:9999*7778+3333*6666 用简便方法计算,最后得数是99990000
动脑筋:9999*7778+3333*6666 用简便方法计算,最后得数是99990000
动脑筋:9999*7778+3333*6666 用简便方法计算,最后得数是99990000
9999×7778+3333×6666
= 9999×7778+3333×(3×2222)
= 9999×7778+9999×2222
= 9999×(7778+2222)
= 9999×10000
= 99990000
望采纳——————》》