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