20以内加法（进位）+100以内整十加法+100以内整十减法 计算题
1.60 + 20 = 80
2.13 + 5 = 18
3.12 + 1 = 13
4.90 - 50 = 40
5.70 - 20 = 50
6.60 + 50 = 110
7.0 - 0 = 0
8.60 + 0 = 60
9.40 + 10 = 50
10.11 + 10 = 21
11.90 - 70 = 20
12.11 + 6 = 17
13.40 + 50 = 90
14.40 + 60 = 100
15.60 - 40 = 20
16.60 - 50 = 10
17.11 + 1 = 12
18.70 + 0 = 70
19.50 + 80 = 130
20.16 + 4 = 20
21.0 - 0 = 0
22.60 - 10 = 50
23.60 - 30 = 30
24.10 + 1 = 11
25.0 - 0 = 0
26.20 + 40 = 60
27.19 + 8 = 27
28.10 + 9 = 19
29.30 + 50 = 80
30.10 + 5 = 15
31.20 - 10 = 10
32.11 + 8 = 19
33.10 + 4 = 14
34.30 - 0 = 30
35.17 + 9 = 26
36.0 + 50 = 50
37.10 - 0 = 10
38.90 - 50 = 40
39.0 + 10 = 10