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