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