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