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