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