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