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