13减7,13减9的破十法图解

7 5 6 15-9 12 13-8 6 12-7 5 7 8 5 15-7 15 11-8 8 3 13-7=
14-5 19-8 12-3 14-6 13-4 16-7 11-2 3 9 14 5 口算 11-3=
11-9 13-8 16-7 14-9=5 12-6 15-8 11-6 17-9=
小学数学一年级下册数学课件13十几减87丨苏教版19张ppt
口算题 15-9 17-8 18-9 14-6 15-9 13-4 12-9 16-8 14-7=