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