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