7777×5+9999×7+2222写出简便算法,要全哦.
问题描述:
7777×5+9999×7+2222
写出简便算法,要全哦.
答
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
答
7777×5+9999×7+2222
=1111×(35+63+2)
=1111×100
=111100
答
7777×5+9999×7+2222
=1111×7×5+1111×9×7+1111×2
=1111×(35++63+2)
=1111×100
=111100
答
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
答
7777×5+9999×7+2222
=1111×7×5+1111×9×7+2×1111
=1111×(5×7+9×7+2)
=1111×100
=111100