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
1.8 + 1 = 9
2.1 + 8 + 4 = 13
3.4 + 5 - 0 = 9
4.16 - 1 - 0 = 15
5.17 + 5 = 22
6.16 + 10 = 26
7.5 + 9 + 1 = 15
8.19 + 4 = 15
9.3 - 1 = 2
10.3 - 2 = 1
11.16 + 5 = 21
12.4 - 0 = 4
13.6 - 1 = 5
14.3 + 3 - 5 = 1
15.2 + 6 = 8
16.4 - 0 - 0 = 4
17.3 - 2 - 0 = 1
18.9 + 5 + 6 = 20
19.1 + 3 = 4
20.0 + 6 - 1 = 5
21.0 + 0 - 3 = -3
22.1 + 2 - 1 = 2
23.3 + 2 = 5
24.7 + 0 - 2 = 5
25.11 + 5 = 16
26.2 + 2 + 0 = 4
27.13 + 10 = 23
28.5 + 7 - 4 = 8
29.3 + 2 + 3 = 8
30.15 + 1 = 16
31.10 - 6 - 0 = 4
32.7 + 2 = 9
33.8 + 0 - 0 = 8
34.0 + 3 - 2 = 1
35.13 - 7 - 0 = 6
36.0 + 7 + 7 = 14
37.7 + 0 = 7
38.16 - 2 = 14
39.7 + 6 + 9 = 22