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