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