请帮我算算343+345+347+349+351=( )x( ) 谢谢!顺便说说怎么算的?谢谢!
来源:学生作业帮助网 编辑:作业帮 时间:2024/06/24 23:06:01
![请帮我算算343+345+347+349+351=( )x( ) 谢谢!顺便说说怎么算的?谢谢!](/uploads/image/z/3661035-51-5.jpg?t=%E8%AF%B7%E5%B8%AE%E6%88%91%E7%AE%97%E7%AE%97343%2B345%2B347%2B349%2B351%3D%EF%BC%88+%EF%BC%89x%EF%BC%88+%EF%BC%89+%E8%B0%A2%E8%B0%A2%21%E9%A1%BA%E4%BE%BF%E8%AF%B4%E8%AF%B4%E6%80%8E%E4%B9%88%E7%AE%97%E7%9A%84%3F%E8%B0%A2%E8%B0%A2%21)
请帮我算算343+345+347+349+351=( )x( ) 谢谢!顺便说说怎么算的?谢谢!
请帮我算算343+345+347+349+351=( )x( ) 谢谢!
顺便说说怎么算的?谢谢!
请帮我算算343+345+347+349+351=( )x( ) 谢谢!顺便说说怎么算的?谢谢!
(343+351)*5/2=347*5=1735 等差数列
347*5
347*5
347*5(347是平均数,一共5个数)