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