11~20的加减法 计算题
1.12 + 0 = 12
2.19 + 2 = 21
3.15 + 7 = 8
4.11 - 7 = 18
5.17 + 3 = 14
6.17 - 2 = 15
7.13 - 4 = 17
8.18 - 1 = 19
9.16 - 2 = 18
10.18 + 8 = 10
11.18 - 0 = 18
12.17 + 3 = 20
13.17 + 9 = 26
14.12 + 4 = 8
15.16 - 4 = 12
16.16 + 7 = 23
17.17 + 6 = 23
18.15 - 6 = 21
19.11 - 3 = 14
20.13 - 2 = 11
21.12 - 5 = 7
22.18 + 7 = 11
23.11 + 2 = 9
24.12 + 4 = 16
25.13 + 3 = 16
26.19 - 9 = 28
27.13 + 3 = 10
28.11 + 1 = 10
29.11 - 2 = 9
30.12 + 3 = 15
31.15 + 1 = 14
32.16 - 9 = 25
33.14 - 9 = 5
34.12 - 1 = 11
35.12 - 9 = 3
36.19 - 8 = 27
37.16 - 5 = 21
38.16 + 0 = 16
39.16 + 8 = 8
40.16 - 9 = 7
41.15 + 9 = 24
42.17 + 7 = 10
43.16 - 3 = 19
44.13 - 5 = 8
45.11 + 7 = 4
46.15 + 4 = 19
47.16 + 0 = 16
48.11 + 1 = 12
49.18 - 2 = 16
50.17 - 6 = 23