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