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
1.14 + 3 = 17
2.6 - 1 = 5
3.3 + 0 - 2 = 1
4.6 + 1 + 2 = 9
5.3 - 1 = 2
6.0 + 5 - 2 = 3
7.8 - 0 = 8
8.17 + 9 = 26
9.4 - 2 - 0 = 2
10.11 - 6 = 5
11.11 - 6 = 17
12.18 - 3 = 21
13.16 + 4 = 20
14.8 + 4 - 9 = 3
15.16 + 1 = 15
16.4 - 0 = 4
17.9 + 9 - 7 = 11
18.7 + 0 = 7
19.0 + 4 - 0 = 4
20.0 + 3 - 0 = 3
21.6 - 0 = 6
22.2 + 1 = 3
23.6 + 3 - 8 = 1
24.14 + 2 = 16
25.1 - 0 = 1
26.15 - 8 = 23
27.15 + 5 = 20
28.13 + 5 = 18
29.10 + 8 = 18
30.9 + 6 + 6 = 21
31.4 + 5 - 0 = 9
32.4 + 0 = 4
33.9 - 6 = 3
34.0 - 0 - 0 = 0
35.4 - 3 = 1
36.5 + 8 - 7 = 6
37.1 - 0 = 1
38.9 - 4 = 5
39.4 + 3 = 7