10以内的加减混合+10以内加减混合+11~20的加减法+20以内加法（进位）+2位数加1位数+2位数减1位数 口算题打印
1.16 + 3 = 19
2.53 - 3 = 50
3.18 + 6 = 24
4.0 + 0 - 4 = -4
5.34 - 2 = 32
6.10 + 0 = 10
7.14 + 1 = 15
8.13 + 1 = 14
9.10 + 5 = 15
10.7 + 7 - 6 = 8
11.99 + 9 = 108
12.4 + 6 - 0 = 10
13.4 + 4 - 4 = 4
14.16 + 2 = 18
15.49 - 3 = 46
16.99 - 9 = 90
17.98 - 8 = 90
18.12 + 8 = 20
19.3 + 2 - 0 = 5
20.10 + 3 = 13
21.20 + 3 = 23
22.13 + 1 = 14
23.9 + 2 - 6 = 5
24.82 - 5 = 77
25.36 + 5 = 41
26.1 + 0 - 0 = 1
27.43 + 4 = 47
28.46 + 8 = 54
29.17 - 0 = 17
30.14 + 2 = 12
31.15 + 10 = 25
32.10 + 8 = 18
33.6 + 1 - 4 = 3
34.59 + 7 = 66
35.8 + 1 - 2 = 7
36.4 + 8 - 1 = 11
37.10 + 4 = 14
38.11 + 7 = 18
39.2 + 5 - 6 = 1