小学数学二年级第二单元用26的乘法口诀求商PPT课件维语.ppt
2-6 , ,2( )=4 3( )=6 4( )=8 ( )3 =12 ( )4 =20 5( )=15, ,8 4=2, ,82=4, , , 1. 12 .2. .,102=,205=,126=,366=,84=,183=,210=5,420=5,212=6,636=6,28=4,318=6,5,2,2,4,6,6, .,63=,2,(),26=3,15,3,1535(),315=5,15 3 ,22,41,88,93,42,51,63,44,31,102,61,82,123,126,51,31,61,41,20 , ,