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）+100以内整十加法+100以内整十减法+100以内整十加减法+2位数加1位数+2位数减1位数 计算题
1.2 + 7 + 6 = 15
2.30 + 80 - 30 = 80
3.56 + 4 = 60
4.0 + 0 = 0
5.13 + 0 = 13
6.30 - 10 = 20
7.78 - 9 = 69
8.13 - 7 - 6 = 0
9.50 - 40 = 10
10.90 + 30 - 90 = 30
11.80 + 0 = 80
12.11 - 8 - 0 = 3
13.14 + 9 = 23
14.75 - 1 = 74
15.9 + 1 + 5 = 15
16.11 + 1 = 12
17.5 + 6 + 7 = 18
18.0 + 60 - 30 = 30
19.13 + 3 = 16
20.24 - 7 = 17
21.14 + 6 = 20
22.10 + 20 - 90 = -60
23.20 + 70 - 80 = 10
24.9 + 2 + 5 = 16
25.50 - 10 = 40
26.15 - 9 - 3 = 3
27.40 + 90 = 130
28.6 + 4 - 3 = 7
29.0 + 80 - 60 = 20
30.70 + 90 - 0 = 160
31.69 - 7 = 62
32.20 + 0 - 90 = -70
33.98 - 5 = 93
34.10 - 9 = 1
35.50 + 40 = 90
36.12 + 5 = 17
37.6 + 0 - 0 = 6
38.0 - 0 = 0
39.2 + 3 - 3 = 2
40.56 + 9 = 65
41.21 + 0 = 21
42.5 + 5 - 7 = 3
43.60 - 30 = 30
44.0 + 30 = 30
45.2 + 1 - 9 = -6
46.97 - 4 = 93
47.10 - 0 = 10
48.4 + 6 + 7 = 17
49.0 + 2 + 2 = 4
50.6 + 6 - 3 = 9