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