动脑筋:9999×7778+3333×6666

来源:学生作业帮助网 编辑:作业帮 时间:2024/05/04 06:48:55
动脑筋:9999×7778+3333×6666

动脑筋:9999×7778+3333×6666
动脑筋:9999×7778+3333×6666

动脑筋:9999×7778+3333×6666
9999×7778+3333×6666
=9999×7778+9999×2222
=9999×(7778+2222)
=9999×10000
=99990000

=9999×7778+9999×2222
=9999×(7778+2222)
=9999×10000
=99990000

计算机按一下

9999×7778+3333×6666
=9999×7778+(2222x3)x6666
=9999×7778+(3x6666)x2222

=9999×7778+9999×2222
=9999×(7778+2222)
=9999×10000
=99990000
这么 清晰应该能看懂
采纳我的亲