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