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