|
1.
1 – 1 =
1
0
2
3
|
2.
1 – 1 =
0
3
2
5
|
3.
? – 2 = 0
5
1
2
6
|
4.
? – 6 = 9
4
15
7
11
|
|
5.
5 – 4 =
1
5
4
6
|
6.
? – 15 = 5
9
22
20
19
|
7.
? – 14 = 3
16
9
5
17
|
8.
? – 18 = 2
12
18
16
20
|
|
9.
18 – 8 =
10
7
14
15
|
10.
19 – 13 =
6
5
1
3
|
11.
? – 2 = 1
2
1
8
3
|
12.
13 – 3 =
11
15
10
9
|
|
13.
14 – 13 =
1
6
3
4
|
14.
? – 9 = 11
18
17
20
4
|
15.
5 – 4 =
2
4
1
5
|
16.
? – 1 = 12
14
13
6
17
|
|
17.
? – 0 = 1
6
5
1
2
|
18.
? – 5 = 10
20
4
15
10
|
19.
16 – 9 =
8
9
7
11
|
20.
19 – 17 =
7
5
2
1
|
|
1.
1 – 1 =
1
0
2
3
|
2.
1 – 1 =
0
3
2
5
|
3.
? – 2 = 0
5
1
2
6
|
4.
? – 6 = 9
4
15
7
11
|
|
5.
5 – 4 =
1
5
4
6
|
6.
? – 15 = 5
9
22
20
19
|
7.
? – 14 = 3
16
9
5
17
|
8.
? – 18 = 2
12
18
16
20
|
|
9.
18 – 8 =
10
7
14
15
|
10.
19 – 13 =
6
5
1
3
|
11.
? – 2 = 1
2
1
8
3
|
12.
13 – 3 =
11
15
10
9
|
|
13.
14 – 13 =
1
6
3
4
|
14.
? – 9 = 11
18
17
20
4
|
15.
5 – 4 =
2
4
1
5
|
16.
? – 1 = 12
14
13
6
17
|
|
17.
? – 0 = 1
6
5
1
2
|
18.
? – 5 = 10
20
4
15
10
|
19.
16 – 9 =
8
9
7
11
|
20.
19 – 17 =
7
5
2
1
|