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
1.5 - 4 - 0 = 1
2.7 + 0 = 7
3.15 + 4 = 19
4.19 + 3 = 22
5.4 + 8 + 0 = 12
6.5 - 4 = 1
7.5 - 2 = 3
8.8 - 7 = 1
9.5 + 7 - 1 = 11
10.5 + 7 + 1 = 13
11.6 - 1 = 5
12.3 + 5 - 9 = -1
13.14 - 11 - 7 = -4
14.7 + 2 + 5 = 14
15.5 - 3 - 2 = 0
16.9 + 6 + 2 = 17
17.0 + 8 - 6 = 2
18.9 - 5 = 4
19.3 - 0 = 3
20.3 + 3 = 6
21.1 - 0 = 1
22.17 + 6 = 23
23.8 + 0 = 8
24.5 - 4 - 1 = 0
25.2 + 4 + 3 = 9
26.8 - 6 - 2 = 0
27.6 + 2 = 8
28.8 + 0 = 8
29.8 + 0 - 5 = 3
30.5 - 1 = 4
31.4 + 2 + 7 = 13
32.12 + 9 = 21
33.10 - 3 - 1 = 6
34.12 - 4 = 16
35.4 - 1 = 3
36.14 - 9 - 1 = 4
37.8 - 3 = 5
38.6 + 1 = 7
39.8 + 0 - 7 = 1