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
1.10 - 7 - 0 = 3
2.16 + 8 = 24
3.5 + 2 - 3 = 4
4.4 - 1 = 3
5.8 + 0 - 3 = 5
6.4 + 4 - 6 = 2
7.1 + 9 + 9 = 19
8.0 + 3 = 3
9.20 - 5 = 25
10.7 + 1 - 6 = 2
11.7 + 0 = 7
12.14 + 4 = 18
13.0 + 6 + 2 = 8
14.1 - 0 = 1
15.13 + 1 = 14
16.8 + 7 - 7 = 8
17.17 - 5 = 22
18.2 + 8 + 2 = 12
19.6 - 2 - 1 = 3
20.9 + 9 + 6 = 24
21.11 + 8 = 19
22.15 + 7 = 22
23.18 + 10 = 28
24.13 + 9 = 22
25.9 + 2 - 7 = 4
26.0 + 6 - 3 = 3
27.0 + 3 = 3
28.10 - 2 - 1 = 7
29.9 + 0 - 8 = 1
30.7 + 2 - 7 = 2
31.6 - 3 = 3
32.2 + 5 - 7 = 0
33.19 + 4 = 23
34.8 + 6 - 2 = 12
35.7 + 2 - 1 = 8
36.5 - 3 - 0 = 2
37.9 + 8 + 3 = 20
38.7 + 4 + 9 = 20
39.3 + 0 = 3