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