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