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