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