20-50内 加减法 Flashcards
23 + 15 =
38
47 - 26 =
21
35 + 12 =
47
40 - 18 =
22
39 - 22 =
17
30 - 15 =
15
25 + 21 =
36
48 - 27 =
21
37 + 10 =
47
41 - 20 =
21
33 + 14 =
47
46 - 23 =
23
28 + 19 =
47
38 - 24 =
14
32 - 17 =
15
26 + 22 =
48
49 - 25 =
24
31 + 12 =
43
35 - 13 =
22
20 + 15 =
35
43 - 16 =
27
27 + 18 =
45
36 - 21 =
15
34 - 19 =
15
24 + 11 =
35
47 - 14 =
33
29 + 10 =
39
38 - 27 =
11
22 + 17 =
39
41 - 28 =
13
25 + 15 =
40
39 - 19=
20
21 + 18 =
39
30 - 11 =
19
32 + 10 =
42
44 - 13 =
31
23 + 24 =
47
48 - 16 =
32
26 + 20 =
46
31 - 22 =
9
34 + 11 =
45
45 - 28 =
17
27 + 19 =
46
33 - 18 =
15
28 + 15 =
43
49 - 21 =
28
24 + 16 =
40
40 - 23
17
36 + 14 =
50
42 - 26 =
16
25 + 12 =
37
37 - 15 =
22
23 + 21 =
44
30 - 19 =
11
35 + 10 =
45
41 - 24 =
17
22 + 18 =
40
48 - 20 =
28
29 + 11 =
40
44 - 27 =
17
27 + 14 =
41
32 - 16 =
16
39 + 12 =
51
46 - 18 =
28
28 + 17 =
45
31 - 13 =
18
33 + 20 =
53
47 - 22 =
25
21 + 15 =
36
40 - 28 =
12
25 + 23 =
48
45 - 14 =
31
26 + 19 =
45
38 - 17 =
21
22 + 16 =
38
43 - 20 =
23
30 + 12 =
42
42 - 21 =
21
27 + 13 =
40
36 - 19 =
17
34 + 15 =
49
49 - 25 =
24
23 + 18 =
41
37 - 10=
27
24 + 14 =
38
41 - 22 =
19
26 + 15 =
41
35 - 12 =
23
29 + 13 =
42
47 - 19 =
28
20 + 21 =
41
32 - 14 =
18
33 + 17 =
50
46 - 23 =
23
21 + 11 =
32
40 - 16 =
24
