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 + 3 + 6 = 17
2.9 + 6 + 8 = 23
3.11 - 7 = 4
4.12 - 2 - 0 = 10
5.13 - 1 - 0 = 12
6.1 + 6 - 3 = 4
7.4 + 3 - 4 = 3
8.7 + 2 = 9
9.0 + 7 + 7 = 14
10.16 + 4 = 20
11.4 + 4 - 2 = 6
12.12 + 0 = 12
13.6 + 2 = 8
14.4 + 6 + 3 = 13
15.7 + 4 + 4 = 15
16.7 + 5 - 7 = 5
17.19 + 5 = 14
18.4 + 3 - 0 = 7
19.14 + 6 = 8
20.1 + 5 - 5 = 1
21.1 + 0 = 1
22.14 + 3 = 11
23.1 + 6 - 3 = 4
24.0 + 7 - 5 = 2
25.2 + 5 - 0 = 7
26.3 + 1 - 3 = 1
27.6 - 0 = 6
28.1 - 0 = 1
29.13 + 10 = 23
30.6 + 9 - 5 = 10
31.6 + 1 = 7
32.15 - 4 = 19
33.3 - 0 = 3
34.3 + 1 - 3 = 1
35.1 + 7 + 4 = 12
36.2 + 1 - 0 = 3
37.14 + 4 = 18
38.2 - 1 - 0 = 1
39.3 + 4 - 3 = 4