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