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 - 0 = 8
2.2 + 9 + 6 = 17
3.7 + 4 - 2 = 9
4.3 + 1 + 6 = 10
5.8 + 1 = 9
6.10 + 4 = 14
7.2 + 2 - 9 = -5
8.2 + 1 = 3
9.2 - 0 - 0 = 2
10.5 - 0 = 5
11.6 + 0 - 3 = 3
12.13 + 3 = 16
13.19 + 7 = 26
14.2 + 7 - 7 = 2
15.1 + 5 = 6
16.1 + 9 - 3 = 7
17.7 + 1 - 3 = 5
18.17 + 4 = 13
19.9 + 0 - 6 = 3
20.3 - 1 = 2
21.3 + 7 + 2 = 12
22.7 + 6 + 8 = 21
23.4 + 2 = 6
24.5 + 2 - 5 = 2
25.0 + 3 - 0 = 3
26.0 + 6 + 1 = 7
27.16 + 10 = 26
28.14 + 1 = 15
29.15 + 4 = 19
30.0 - 0 = 0
31.4 - 1 = 3
32.3 + 0 = 3
33.15 - 8 = 23
34.16 + 10 = 26
35.15 + 4 = 19
36.3 - 1 = 2
37.4 + 2 - 0 = 6
38.6 - 1 = 5
39.16 + 9 = 25