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