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