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