7777×5+9999×7+2222写出简便算法,要全哦.
来源:学生作业帮助网 编辑:作业帮 时间:2024/08/04 22:29:45
![7777×5+9999×7+2222写出简便算法,要全哦.](/uploads/image/z/1748598-6-8.jpg?t=7777%C3%975%EF%BC%8B9999%C3%977%EF%BC%8B2222%E5%86%99%E5%87%BA%E7%AE%80%E4%BE%BF%E7%AE%97%E6%B3%95%2C%E8%A6%81%E5%85%A8%E5%93%A6.)
x)3Ḿ,# x6i|gXulqK_`gC3m
(T
aTh!+y$Y NsOx?
nmO'=ݰ\6
h1NE`֬yɎUw|1iG Gj6! a¥a@Ii@<AL|$1ɉkw X y :
7777×5+9999×7+2222写出简便算法,要全哦.
7777×5+9999×7+2222
写出简便算法,要全哦.
7777×5+9999×7+2222写出简便算法,要全哦.
7777×5+9999×7+2222
=1111×7×5+1111×9×7+2×1111
=1111×(5×7+9×7+2)
=1111×100
=111100
提取1111
然后就得7777×5+9999×7+2222=1111(35+63+2)=1111*100=111100
第一个给我分哦
7777×5+9999×7+2222 =1111×7×5+1111×9×7+1111×2 =1111×35+1111×63+1111×2 =1111×(35+63+2) =1111×100 =111100
7777×5+9999×7+2222
=1111×(35+63+2)
=1111×100
=111100
7777×5+9999×7+2222
=1111×7×5+1111×9×7+1111×2
=1111×(35++63+2)
=1111×100
=111100