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