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