444×888+4×999简便计算
=444*888+4*111*9
=444*(888+9)
=444*(900-3)
=444*900-444*3
=399600-1332
=398268
=444*(888+9)
=444*(900-3)
=444*900-444*3
=399600-1332
=398268
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第1个回答 2016-06-29
(4*111)*(8*111)+4*(1000-1)
=32+444+888+1221+4000-4
=(32+888)+(444-4)+1221+4000
=920+440+5221
=6581
=32+444+888+1221+4000-4
=(32+888)+(444-4)+1221+4000
=920+440+5221
=6581