1.
4 – 0 =
4
1
|
2.
10 + 3 =
13
1
|
3.
18 – 5 =
13
1
|
4.
12 – 2 =
10
1
|
5.
11 – 11 =
0
2
|
6.
9 + 3 =
12
1
|
7.
4 + 9 =
13
1
|
8.
12 – 3 =
9
1
|
9.
1 – 0 =
2
1
|
10.
3 + 9 =
12
1
|
11.
19 – 16 =
1
3
|
12.
4 + 7 =
11
1
|
13.
3 – 0 =
3
1
|
14.
12 + 8 =
2
20
|
15.
20 – 7 =
13
1
|
16.
18 + 1 =
19
2
|
17.
10 + 2 =
1
12
|
18.
1 – 1 =
2
0
|
19.
16 + 3 =
2
19
|
20.
13 + 1 =
14
1
|
1.
4 – 0 =
4
1
|
2.
10 + 3 =
13
1
|
3.
18 – 5 =
13
1
|
4.
12 – 2 =
10
1
|
5.
11 – 11 =
0
2
|
6.
9 + 3 =
12
1
|
7.
4 + 9 =
13
1
|
8.
12 – 3 =
9
1
|
9.
1 – 0 =
2
1
|
10.
3 + 9 =
12
1
|
11.
19 – 16 =
1
3
|
12.
4 + 7 =
11
1
|
13.
3 – 0 =
3
1
|
14.
12 + 8 =
2
20
|
15.
20 – 7 =
13
1
|
16.
18 + 1 =
19
2
|
17.
10 + 2 =
1
12
|
18.
1 – 1 =
2
0
|
19.
16 + 3 =
2
19
|
20.
13 + 1 =
14
1
|