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