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