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