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