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