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