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