11~20的加减法+20以内加法（进位） 口算题打印
1.15 + 5 = 20
2.14 + 6 = 8
3.16 + 8 = 24
4.15 + 9 = 24
5.10 + 2 = 12
6.11 + 9 = 20
7.11 + 3 = 14
8.14 + 2 = 12
9.19 - 8 = 27
10.20 + 0 = 20
11.14 + 1 = 13
12.16 + 7 = 9
13.14 + 8 = 22
14.12 - 8 = 20
15.18 - 1 = 19
16.13 + 6 = 19
17.14 + 7 = 7
18.19 + 6 = 25
19.11 - 0 = 11
20.15 + 8 = 23
21.12 - 9 = 21
22.19 + 7 = 26
23.18 + 1 = 19
24.14 + 5 = 9
25.13 + 7 = 20
26.15 + 7 = 22
27.10 + 3 = 13
28.11 + 4 = 15
29.14 + 3 = 17
30.20 + 9 = 11
31.10 + 9 = 19
32.14 + 7 = 21
33.18 + 2 = 16
34.19 - 0 = 19
35.12 + 1 = 13
36.15 - 5 = 20
37.18 - 6 = 24
38.17 - 8 = 25
39.10 + 9 = 19