11~20的加减法+20以内加法（进位） 口算题打印
1.17 + 10 = 27
2.12 + 0 = 12
3.13 - 5 = 18
4.14 + 5 = 19
5.19 + 4 = 23
6.12 + 5 = 7
7.19 + 9 = 28
8.19 + 5 = 24
9.14 + 8 = 22
10.17 + 6 = 11
11.19 - 7 = 26
12.19 + 2 = 21
13.14 + 1 = 15
14.13 + 8 = 5
15.11 + 5 = 6
16.17 + 5 = 12
17.17 + 7 = 10
18.17 + 1 = 18
19.11 - 9 = 2
20.18 - 2 = 20
21.15 + 5 = 10
22.14 + 8 = 22
23.20 + 3 = 17
24.13 + 4 = 17
25.20 + 1 = 21
26.20 + 4 = 16
27.15 + 7 = 22
28.17 - 4 = 13
29.10 + 6 = 16
30.18 + 1 = 17
31.12 + 10 = 22
32.15 + 7 = 22
33.20 + 1 = 21
34.15 + 6 = 21
35.19 - 9 = 28
36.14 + 8 = 22
37.14 - 2 = 12
38.16 + 3 = 19
39.17 + 8 = 25