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