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