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