81-7=
85-9=
55-8=
10-6=
20-6=
43-4=
10-5=
92-5=
92-5=
76-7=
75-7=
12-7=
90-7=
81-2=
70-4=
80-9=
31-5=
5
81-7=
85-9=
55-8=
10-6=
20-6=
43-4=
10-5=
92-5=
92-5=
76-7=
75-7=
12-7=
90-7=
81-2=
70-4=
80-9=
31-5=
53-7=
74-9=
72-7=
61-7=
47-8=
43-5=
51-3=
31-4=
35-8=
22-3=
56-7=
71-7=
42-5=
80-8=
32-3=
41-4=
55-8=
21-4=
20-2=
12-3=
81-8=
51-6=
54-6=
36-7=
15-9=
62-9=
92-5=
65-8=
15-6=
92-8=
82-5=
70-5=
25-9=
32-9=
46-8=
10-4=
52-4=
80-8=
72-4=
20-2=
51-3=
50-2=
70-5=
50-1=
27-8=
96-9=
80-5=
85-6=
81-4=
35-7=
73-9=
65-9=
13-6=
18-9=
22-5=
65-7=
30-8=
54-6=
30-3=
92-8=
25-6=
41-5=
62-3=
31-7=
12-4=
92-7=
10-8=
50-4=
82-5=
31-6=
95-8=
31-7=
44-6=
10-7=
45-6=
72-6=
73-6=
44-6=
94-5=
13-7=
50-5=
61-5=
32-6=
45-6=
63-4=
71-3=
50-2=
41-7=
60-8=
10-1=
90-8=
96-9=
20-5=
10-1=
98-9=
64-6=
62-9=
62-3=
70-6=
65-8=
63-6=
81-5=
64-8=
10-3=
55-9=
74-9=
31-5=
16-8=
93-9=
62-5=
23-4=
51-2=
73-8=
33-5=
41-7=
21-5=
27-9=
81-5=
73-7=
60-5=
63-6=
13-8=
82-3=
32-4=
52-4=
72-3=
93-4=
32-3=
92-3=
83-8=
60-4=
15-9=
13-5=
82-9=
91-2=
12-4=
91-6=
77-9=
50-3=
10-7=
16-9=
13-6=
24-7=
34-5=
25-6=
23-6=
12-4=
12-6=
45-7=
45-9=
50-3=
82-3=
90-6=
70-2=
23-9=
23-5=
16-8=
51-5=
64-8=
71-6=
67-8=
32-3=
60-3=
两位数减一位数退位减法口算 来自淘豆网m.daumloan.com转载请标明出处.
