11~20的加减法+20以内加法（进位） 计算题
1.14 + 2 = 16
2.13 + 9 = 22
3.15 + 9 = 24
4.17 - 9 = 26
5.15 - 6 = 21
6.11 - 0 = 11
7.18 + 0 = 18
8.15 + 10 = 25
9.14 + 6 = 20
10.16 + 2 = 18
11.16 - 1 = 17
12.15 - 2 = 13
13.15 - 3 = 12
14.12 + 1 = 13
15.17 + 5 = 22
16.19 + 7 = 26
17.14 + 1 = 15
18.15 + 6 = 21
19.17 + 2 = 19
20.12 + 10 = 22
21.11 + 9 = 20
22.19 + 4 = 23
23.11 + 7 = 18
24.16 - 9 = 25
25.11 - 0 = 11
26.15 + 2 = 17
27.14 + 2 = 16
28.13 + 7 = 20
29.19 + 4 = 23
30.13 + 1 = 12
31.16 + 0 = 16
32.11 + 9 = 20
33.19 - 6 = 13
34.13 - 1 = 14
35.14 - 5 = 9
36.16 + 3 = 19
37.16 - 9 = 25
38.17 + 6 = 23
39.13 + 7 = 20