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