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