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