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