20以内退位减法(7)
11-9= 12-9= 12-7= 11-3= 12-3= 16-7= 15-6= 13-9= 13-6= 12-4= 11-8= 12-5= 11-5= 15-8= 16-9= 16-8= 12-6= 13-8= 14-7= 11-6= 17-9= 14-8= 15-9= 17-8= 11-7= 13-5= 14-9= 13-7= 14-5= 15-7= 14-6= 11-4= 11-2= 12-6= 13-8= 14-7= 12-3= 16-7= 15-6= 11-5= 15-8= 16-9= 20以内退位减法(8)
12-3= 16-7= 15-6= 13-6= 12-4= 11-8= 13-8= 12-6= 14-7= 11-9= 12-9= 12-7= 17-9= 14-8= 15-9= 11-7= 13-5= 14-9= 13-7= 14-5= 15-7= 14-6= 11-4= 11-2= 11-5= 15-8= 16-9= 14-6= 11-4= 11-2= 13-7= 14-5= 15-7= 11-9= 12-9= 12-7= 21
12-8= 18-9= 13-4= 11-6= 13-9= 16-8=
13-9= 12-5= 11-6= 11-3= 17-8= 12-8= 18-9= 13-4= 16-8= 13-4= 18-9= 11-3=
20以内退位减法( 9)
13-7= 14-5= 15-7= 18-9= 17-9= 14-8= 15-9= 17-8= 14-6= 11-4= 11-2= 13-4= 11-9= 12-9= 12-7= 11-3= 13-8= 12-6= 14-7= 11-6= 11-7= 13-5= 14-9= 12-8= 12-3= 16-7= 15-6= 13-9= 13-6= 12-4= 11-8= 12-5= 11-5= 15-8= 16-9= 16-8= 11-9= 12-9= 12-7= 11-3= 13-7= 14-5= 15-7= 18-9= 14-6= 11-4= 11-2= 13-4=
20以内退位减法(10 )
12-3= 16-7= 15-6= 13-9= 11-7= 13-5= 14-9= 12-8= 13-8= 12-6= 14-7= 11-6= 11-9= 12-9= 12-7= 11-3= 14-6= 11-4= 11-2= 13-4= 11-5= 15-8= 16-9= 16-8= 13-6= 12-4= 11-8= 12-5= 17-9= 14-8= 15-9= 17-8= 11-7= 13-5= 14-9= 12-8= 13-7= 14-5= 15-7= 18-9= 11-9= 12-9= 12-7= 11-3=
22
20以内进位加法口算(1)
9+2= 8+6= 4+7= 8+8= 7+6= 9+8= 7+9= 4+9= 6+8= 9+9= 2+9= 9+4= 8+9= 3+8= 6+5= 4+8= 7+5= 5+8= 6+7= 7+4=
9+6= 3+9= 5+6= 5+7= 6+6= 7+7= 9+3= 7+8= 5+9= 6+9= 8+7= 8+4= 7+5= 5+8= 6+7= 8+9= 3+8= 6+5= 6+8= 9+9= 2+9= 20以内进位加法口算(2)
6+8= 9+9= 2+9= 5+7= 6+6= 7+7= 8+9= 3+8= 6+5= 9+2= 8+6= 4+7= 9+3= 7+8= 5+9= 7+5= 5+8= 6+7= 9+6= 3+9= 5+6= 7+6= 9+8= 7+9= 6+9= 8+7= 8+4= 7+5= 5+8= 6+7= 9+2= 8+6= 4+7= 9+3= 7+8= 5+9=
23
8+5= 9+5= 8+3= 9+7= 7+4= 4+8= 9+4=
9+4= 9+5= 4+8= 8+8= 8+3= 7+4= 8+5= 4+9= 9+7= 7+4= 8+8= 8+3=
24
20以内进位加法口算(3)
7+6= 9+8= 7+9= 4+9= 9+2= 8+6= 4+7= 8+8=
9+6= 3+9= 5+6= 8+5= 7+5= 5+8= 6+7= 7+4= 6+8= 9+9= 2+9= 9+4= 9+3= 7+8= 5+9= 6+9= 8+7= 8+4= 8+9= 3+8= 6+5= 5+7= 6+6= 7+7= 9+3= 7+8= 5+9= 6+8= 9+9= 2+9= 9+2= 8+6= 4+7= 20以内进位加法口算(4)
6+9= 8+7= 8+4= 9+2= 8+6= 4+7= 5+7= 6+6= 7+7= 9+3= 7+8= 5+9= 6+8= 9+9= 2+9= 7+5= 5+8= 6+7= 9+6= 3+9= 5+6= 7+6= 9+8= 7+9= 8+9= 3+8= 6+5= 9+3= 7+8= 5+9= 7+5= 5+8= 6+7= 6+8= 9+9= 2+9= 25
8+3= 9+7= 4+8= 9+5= 8+3= 9+4= 8+8= 9+7= 8+8= 9+5= 8+3= 9+4= 7+4=
8+5= 4+9= 4+8= 8+3= 7+4= 9+4=