苏教版一年级数学下册十几减九ppt课件.ppt
苏教版一年级数学下册,十几减九,1个十和4个一合起来是( )。,14,16里面有( )个十和( )个一。,1,6,9 + 7 =,8 5 =,7 + 8 =,109 =,6 + 8 =,5 + 7 =,7 + 6 =,9 3 =,16,15,3,1,14,6,12,13,水果店,4,1,,2,,3,,4,9,4,4,4,3,7,?条,3,1,5,9,2,10,7,4,8,6,2,9,4,5,6,7,8,3,10,11 9=,12 9=,13 9=,14 9=,15 9=,16 9=,17 9=,18 9=,19 9=,你发现了什么?,