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