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