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