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