計算下列各題,怎樣簡便就怎麼算.(遞等式計算) 88x99 = = = =

計算下列各題,怎樣簡便就怎麼算.(遞等式計算) 88x99 = = = =

88x99
=88×(100-1)
=88×100-88
=8800-88
=8712