|
1.
? – 5 = 0
5
10
|
2.
8 – 4 =
4
8
|
3.
6 – 3 =
7
3
|
4.
2 – 1 =
4
1
|
|
5.
? – 0 = 15
15
12
|
6.
? – 13 = 6
21
19
|
7.
15 – 6 =
1
9
|
8.
7 – 1 =
6
4
|
|
9.
? – 4 = 1
3
5
|
10.
5 – 2 =
3
8
|
11.
? – 4 = 2
6
9
|
12.
14 – 2 =
6
12
|
|
13.
? – 13 = 4
17
8
|
14.
? – 12 = 6
5
18
|
15.
18 – 6 =
12
5
|
16.
17 – 15 =
2
1
|
|
17.
4 – 1 =
3
5
|
18.
? – 4 = 11
3
15
|
19.
15 – 2 =
1
13
|
20.
11 – 2 =
4
9
|
|
1.
? – 5 = 0
5
10
|
2.
8 – 4 =
4
8
|
3.
6 – 3 =
7
3
|
4.
2 – 1 =
4
1
|
|
5.
? – 0 = 15
15
12
|
6.
? – 13 = 6
21
19
|
7.
15 – 6 =
1
9
|
8.
7 – 1 =
6
4
|
|
9.
? – 4 = 1
3
5
|
10.
5 – 2 =
3
8
|
11.
? – 4 = 2
6
9
|
12.
14 – 2 =
6
12
|
|
13.
? – 13 = 4
17
8
|
14.
? – 12 = 6
5
18
|
15.
18 – 6 =
12
5
|
16.
17 – 15 =
2
1
|
|
17.
4 – 1 =
3
5
|
18.
? – 4 = 11
3
15
|
19.
15 – 2 =
1
13
|
20.
11 – 2 =
4
9
|