10以内的加法+10以内的减法+10以内的加减混合+10以内连加+10以内连减+10以内加减混合+11~20的加减法+20以内加法（进位） 计算题
1.9 + 0 + 3 = 12
2.13 - 4 - 3 = 6
3.9 + 8 - 1 = 16
4.5 + 6 + 5 = 16
5.12 + 5 = 17
6.4 + 3 - 6 = 1
7.7 - 2 = 5
8.9 + 0 = 9
9.6 + 9 - 2 = 13
10.17 + 3 = 20
11.5 + 0 - 7 = -2
12.13 - 2 - 1 = 10
13.11 - 1 - 0 = 10
14.8 + 0 + 9 = 17
15.14 - 8 - 2 = 4
16.0 + 3 - 5 = -2
17.9 + 5 + 6 = 20
18.14 + 1 = 15
19.5 + 1 - 0 = 6
20.1 + 4 - 4 = 1
21.5 + 1 = 6
22.12 + 6 = 18
23.0 + 0 = 0
24.19 + 1 = 20
25.3 + 3 = 6
26.1 - 0 = 1
27.2 + 3 + 1 = 6
28.8 + 6 - 7 = 7
29.2 + 6 - 1 = 7
30.13 + 5 = 18
31.7 + 8 - 8 = 7
32.18 - 8 = 26
33.15 + 7 = 22
34.11 - 9 - 5 = -3
35.20 - 7 = 13
36.10 + 3 = 13
37.2 + 8 + 5 = 15
38.10 + 10 = 20
39.2 + 1 - 2 = 1