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