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