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