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