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