20以内加法（进位）+100以内整十加减法+2位数加1位数 计算题
1.15 + 9 = 24
2.70 + 50 - 40 = 80
3.11 + 2 = 13
4.11 + 4 = 15
5.70 + 50 - 10 = 110
6.54 + 4 = 58
7.50 + 10 - 30 = 30
8.70 + 10 - 20 = 60
9.15 + 6 = 21
10.20 + 80 - 0 = 100
11.47 + 8 = 55
12.70 + 40 - 40 = 70
13.40 + 50 - 90 = 0
14.80 + 90 - 30 = 140
15.62 + 9 = 71
16.60 + 60 - 60 = 60
17.21 + 2 = 23
18.60 + 60 - 0 = 120
19.30 + 8 = 38
20.60 + 30 - 90 = 0
21.30 + 0 - 80 = -50
22.10 + 90 - 10 = 90
23.46 + 9 = 55
24.18 + 2 = 20
25.90 + 30 - 80 = 40
26.18 + 1 = 19
27.18 + 5 = 23
28.13 + 8 = 21
29.60 + 40 - 70 = 30
30.12 + 4 = 16
31.12 + 3 = 15
32.78 + 0 = 78
33.80 + 2 = 82
34.80 + 30 - 40 = 70
35.17 + 1 = 18
36.0 + 10 - 20 = -10
37.88 + 6 = 94
38.22 + 1 = 23
39.17 + 2 = 19