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