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