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