小学数学-二年级-第二单元用2-6的乘法口诀求商1-PPT课件2-维语.ppt
,用2-6的乘法口诀求商,2-6,62=43=25=33=,12,10,9,12,2()=4 3()=6 4()=8()3=12()4=20 5()=15,2,2,5,2,4,3,?,123=,12 3,3 12-3=9 3 9-3=6 3 6-3=3 3,3 6.,:3 12 3(4)=12 4,4,12 4,(2)12 4,4X 12=(3),124=,3,:3,1-,102=,105=,122=,126=,82=,84=,210=5,210=5,212=6,212=6,28=4,28=4,5,6,4,2,2,2,2-,22,41,88,93,33,42,51,66,63,44,31,62,55,102,105,61,82,124,123,126,51,31,61,41,3-,12,15,3,1535(),315=5,(5).。,5,63=,2,(),