11~20的加减法+20以内加法（进位）+100以内整十加法 计算题
1.19 + 8 = 27
2.14 - 0 = 14
3.0 + 10 = 10
4.14 + 8 = 22
5.20 + 2 = 22
6.10 + 70 = 80
7.19 - 7 = 26
8.15 + 7 = 22
9.50 + 70 = 120
10.20 + 50 = 70
11.12 + 9 = 21
12.17 + 10 = 27
13.20 + 9 = 11
14.15 - 5 = 10
15.16 - 2 = 18
16.50 + 90 = 140
17.15 + 3 = 18
18.16 + 9 = 25
19.30 + 0 = 30
20.18 + 0 = 18
21.12 - 7 = 19
22.20 + 20 = 40
23.14 + 9 = 23
24.16 + 8 = 8
25.18 - 2 = 20
26.19 + 10 = 29
27.80 + 80 = 160
28.80 + 60 = 140
29.30 + 40 = 70
30.12 - 7 = 5
31.60 + 0 = 60
32.13 + 7 = 20
33.13 - 9 = 4
34.15 - 2 = 17
35.50 + 10 = 60
36.10 + 8 = 18
37.30 + 20 = 50
38.30 + 90 = 120
39.15 + 7 = 22