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