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