新苏教版二年级数学上册用16乘法口诀求商ppt课件.ppt
用乘法口诀求商,(1)二( )得八 三( )十二 二( )十二2( )8 ( )312 2( )12(2)从10里面连续减2,减去( )次,正好全部减完。,四,4,四,4,六,6,5,( ),4,82=4(组),答:可以分成4组。,四,4,二,2,3,3,三,二,2,2,6,3,2,10,2,5,12,4,3,6,5,1,2,3,4,1,2,3,4,1,2,3,4,5,2,4,1,2,6,1,6,3,12,4,3,个,16,4,4,个,