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