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
1.1 + 0 = 1
2.4 - 2 - 0 = 2
3.5 + 9 - 7 = 7
4.9 + 5 + 3 = 17
5.10 + 7 = 17
6.5 + 1 - 2 = 4
7.16 - 8 = 24
8.3 - 1 - 0 = 2
9.12 + 7 = 19
10.7 + 9 + 8 = 24
11.14 + 3 = 17
12.5 + 2 - 2 = 5
13.9 + 9 + 9 = 27
14.19 + 1 = 18
15.0 + 1 - 0 = 1
16.8 + 0 - 6 = 2
17.2 - 1 - 0 = 1
18.5 + 6 + 1 = 12
19.6 + 1 - 5 = 2
20.6 + 2 - 4 = 4
21.14 - 6 - 1 = 7
22.19 + 7 = 26
23.1 - 0 = 1
24.5 + 3 = 8
25.9 + 0 = 9
26.4 - 1 - 0 = 3
27.14 - 4 = 10
28.12 - 1 = 11
29.2 + 5 = 7
30.5 + 1 = 6
31.3 + 0 - 8 = -5
32.0 - 0 = 0
33.5 + 1 = 6
34.4 - 1 - 0 = 3
35.1 + 3 = 4
36.18 - 10 - 2 = 6
37.1 + 2 - 1 = 2
38.1 + 4 - 7 = -2
39.1 + 0 - 3 = -2