一、口算。
4+1+3=
4+2-3=
9-6+5=
9-1-6=
2+3-2=
1+1+2=
2+1+4=
7+1+2=
6+3+1=
4+12+2=
3-2+1=
2-1+1=
9-5+4=
9-5+2=
1+5+3=
3+2-4=
4+4+2=
3+3-3=
7-7+9=
3+4+2=
9-3-4=
4+5+1=
5-2+1=
1+3+4=
1+6+2=
1+7-2=
2+1+7=
3+2+2=
3+2+3=
9-3+2=
1+2-3=
4+5-6=
4-3+2=
8-5+3=
9-8+7=
5+4-7=
1+1+1=
10-2-6=
6+1+1=
2+3+1=
2+2-1=
2+4+4=
8-4+3=
5-3+6=
2+3-5=
5+2+1=
10-5-3=
7-2-4=
6+1-4=
10-5-2=
9-3-3=
13-10-1=
16-6+0=
7+1-6=

1.8
2.3
3.8
4.2
5.3
6.4
7.7
8.10
9.10
10.18
11.2
12.2
13.8
14.6
15.9
16.1
17.10
18.3
19.9
20.9
21.2
22.10
23.4
24.8
25.9
26.6
27.10
28.7
29.8
30.8
31.0
32.3
33.3
34.6
35.8
36.2
37.3
38.2
39.8
40.6
41.3
42.10
43.7
44.8
45.0
46.8
47.2
48.1
49.3
50.3
51.3
52.2
53.10
54.2