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