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