小學一年級數(shù)學20以內的退位減法練習題
目前，低年級學生的口算速度慢、出錯率高，已成為普遍現(xiàn)象。以下是小編整理的關于數(shù)學20以內的退位減法練習題，希望大家認真閱讀!
16-9= 7+8= 15-6= 9+9=
7+9= 12-8= 11-2= 18-9=
11-5= 13-9= 11-6= 3+8=
13-6= 5+8= 12-3= 11-8=
14-8= 12-8= 18-9= 4+7=
6+6= 9+2= 12-5= 15-7=
14-9= 16-9= 8+6= 4+8=
13-7= 15-9= 11-3= 17-8=
11-9= 12-7= 17-9= 7+7=
14-6= 12-9= 9+9= 16-7=
13-9= 5+7= 13-9= 11-5=
8+8= 8+4= 15-8= 15-9=
14-8= 12-8= 18-9= 4+7=
6+6= 9+2= 12-5= 15-7=
14-9= 16-9= 8+6= 4+8=
13-7= 15-9= 11-3= 17-8=
11-9= 12-7= 17-9= 7+7=
14-6= 12-9= 9+9= 16-7=
13-9= 5+7= 13-9= 11-5=
8+8= 8+4= 15-8= 15-9=
15-9= 14-5= 15-8= 12-4=
13-8= 14-8= 11-2= 15-9=
12-4= 11-4= 20-5= 15-7=
20-9= 11-3= 15-7= 17-8=
12-7= 12-4= 12-4= 14-8=
11-8= 12-9= 20-3= 20-5=
15-9= 12-6= 17-9= 18-9=
11-2= 20-1= 16-9= 16-8=
12-3= 15-6= 14-6= 13-6=
13-4= 15-9= 13-8= 15-8=
15-7= 13-7= 12-8= 14-9=
17-8= 12-6= 12-7= 12-4=
14-8= 13-9= 11-8= 12-9=
11-4= 11-6= 14-7= 11-7=
11-3= 14-9= 12-6= 12-7=
17-8= 12-4= 16-7= 11-8=
14-8= 12-9= 16-7= 14-7=
12-8= 12-8= 15-9= 14-7=
11-3= 14-6= 12-4= 14-6=
17-8= 13-8= 20-4= 13-8=
15-6= 15-7= 15-6= 15-9=
15-9= 17-8= 15-9= 14-7=
13-8= 14-8= 11-2= 15-9=
12-4= 11-4= 20-5= 15-7=
20-9= 11-3= 15-7= 17-8=
12-7= 12-4= 12-4= 14-8=
11-8= 12-9= 20-3= 20-5=
14-7= 12-7= 11-4= 11-3=
12-4= 11-8= 12-9= 12-4=
15-8= 14-7= 15-6= 12-9=
14-9= 20-6= 15-9= 12-8=
12-4= 20-7= 12-8= 14-6=
20-4= 12-8= 14-6= 13-8=
12-8= 14-6= 13-8= 15-7=
14-6= 13-8= 15-7= 20-8=
13-8= 20-7= 12-9= 15-9=
15-9= 14-5= 15-8= 12-4=
9+8= 4+9= 5+6= 14-7=
16-8= 19-8= 13-5= 7+6=
11-4= 13-4= 14-9= 12-6=
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