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