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 口算题打印
1.79 + 2 = 81
2.19 - 18 - 17 = -16
3.6 - 5 - 3 = -2
4.15 + 9 = 24
5.4 + 3 - 1 = 6
6.60 + 30 - 80 = 10
7.20 + 40 - 70 = -10
8.50 + 90 - 90 = 50
9.10 + 5 = 15
10.40 - 10 = 30
11.70 - 50 = 20
12.9 - 1 - 0 = 8
13.80 + 80 = 160
14.5 + 0 + 4 = 9
15.30 + 80 = 110
16.44 + 7 = 51
17.12 - 6 = 6
18.0 + 2 - 9 = -7
19.6 + 2 - 9 = -1
20.9 - 7 - 6 = -4
21.1 + 5 - 7 = -1
22.90 - 30 = 60
23.17 + 6 = 23
24.18 + 10 = 28
25.20 + 70 - 80 = 10
26.15 - 12 - 7 = -4
27.58 + 4 = 62
28.2 - 0 - 0 = 2
29.11 + 9 = 20
30.60 + 40 = 100
31.24 - 2 = 22
32.14 - 11 - 7 = -4
33.15 - 11 - 7 = -3
34.90 - 0 = 90
35.50 - 20 = 30
36.9 + 5 + 3 = 17
37.2 + 7 + 8 = 17
38.13 - 5 = 8
39.10 + 30 = 40